ASA flanges, adapted decades ago from 150# steam-pipe flanges, are simple, sexed vacuum seals—one flange is grooved to accept an o-ring while the mating flange is smooth.
ASA flanges are limited (by the o-ring's properties) to applications with temperatures between ~0° C and 120-180° C and pressure from atmosphere to ~10-7 torr or mbar. These flanges are sized by the connecting pipe's nominal I.D. in inches. The normal range is: 1", 1.5", 2", 3", 4", 6", 8", and 10". They have large diameter bolt holes through the rim; consequently, for any given tube diameter, ASA flanges have much larger O.D.s than other flange types.
Ordering Table
All dimensions listed in the table below, unless otherwise stated, are in inches.
All dimensions listed in the table below, unless otherwise stated, are in millimeters.
(Click column headers to sort data)
Flange Size/OD | Type | Flange Material | Drawing | Bore | Bolt Hole Dia. | # of Bolt Holes | Note | Dim A | Dim B | Dim C | Dim D | Dim E | Dim F | Description |
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Part Number | Price | In Stock | Add To Cart | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flange Size/OD | Type | Flange Material | Drawing | Bore | Bolt Hole Dia. | # of Bolt Holes | Note | Dim A | Dim B | Dim C | Dim D | Dim E | Dim F | Description |
|
Part Number | Price | In Stock | Add To Cart | ||||
ASA 6 (11.00" OD) |
|
|
Blank | 0.81 |
|
— | 11 | 0.75 | Blank | — | — | 9.5 | ASA FLG,SS,ROT,11"OD,BLANK, (8).812"BH,9.50"BC,O-R GRV |
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ASA1100X00GR | $824.00 | |||||||
ASA 6 (11.00" OD) |
|
|
6.02 | 0.81 |
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— | 11 | 0.75 | 6.02 | 5.92 | 0.38 | 9.5 | ASA FLG,SS,ROT,11"OD,6.02"C- BORE,(8).812"BH,9.50"BC,OR GRV |
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ASA1100X60GR | $869.00 | |||||||
ASA 6 (11.00" OD) |
|
|
8.02 | 0.81 |
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— | 11 | 0.75 | 8.02 | 7.88 | 0.38 | 9.5 | ASA FLG,SS,ROT,11"OD,8.02"C- BORE,(8).812"BH,9.5"BC,O-R GRV |
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ASA1100X80GR | $869.00 | |||||||
ASA 8 (13.50" OD) |
|
|
Blank | 0.81 |
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— | 13.5 | 0.75 | Blank | — | — | 11.75 | ASA FLG,SS,ROT,13.50"OD,BLANK, (8).812"BH,11.75"BC,O-R GRV |
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ASA1350X00GR | P.O.R. | |||||||
ASA 8 (13.50" OD) |
|
|
10.02 | 0.81 |
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— | 13.5 | 0.75 | 10.02 | 9.88 | 0.38 | 11.75 | ASA FLG,SS,ROT,13.50"OD,10.02" C-BRE,(8).812BH,11.75BC,OR GRV |
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ASA1350X10GR | $1,053.00 | |||||||
ASA 8 (13.50" OD) |
|
|
8.02 | 0.81 |
|
— | 13.5 | 0.75 | 8.02 | 7.88 | 0.38 | 11.75 | ASA FLG,SS,ROT,13.5"OD,8.02"C- BORE,8).812"BH,11.75"BC,OR GRV |
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ASA1350X80GR | $1,053.00 | |||||||
ASA 10 (16.00" OD) |
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|
Blank | 0.81 |
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16 | 0.75 | Blank | — | — | 14.25 | ASA FLG,SS,ROT,16"OD,BLANK, (12).812"BH,14.25"BC,O-R GRV |
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ASA1600X00GR | $1,877.00 | ||||||||
ASA 10 (16.00" OD) |
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10.02 | 0.81 |
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— | 16 | 0.75 | 10.02 | 9.88 | 0.38 | 14.25 | ASA FLG,SS,ROT,16"OD,10.02"C- BRE,(12).812"BH,14.25BC,O-RGRV |
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ASA1600X10GR | $1,774.50 | |||||||
ASA 10 (16.00" OD) |
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|
12.02 | 0.81 |
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— | 16 | 0.75 | 12.02 | 11.88 | 0.38 | 14.25 | ASA FLG,SS,ROT,16"OD,12.02"C- BRE,(12).812"BH,14.25BC,O-RGRV |
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ASA1600X12GR | $1,774.50 | |||||||
ASA 1 (4.25" OD) |
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Blank | 0.63 |
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— | 4.25 | 0.5 | Blank | — | — | 3.13 | ASA FLG,SS,ROT,4.25"OD,BLANK, (4).625"BH,3.125"BC,O-R GRV |
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ASA425X00GR | P.O.R. | |||||||
ASA 1 (4.25" OD) |
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1.01 | 0.63 |
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— | 4.25 | 0.5 | 1.01 | 0.94 | 0.25 | 3.13 | ASA FLG,SS,ROT,4.25"OD,1.01"C- BORE,(4).625BH,3.125"BC,OR GRV |
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ASA425X10GR | $301.00 | |||||||
ASA 1 (4.25" OD) |
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1.51 | 0.63 |
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— | 4.25 | 0.5 | 1.51 | 1.44 | 0.25 | 3.13 | ASA FLG,SS,ROT,4.25"OD,1.51"C- BORE,(4).625BH,3.125BC,O-R GRV |
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ASA425X15GR | $301.00 | |||||||
ASA 1.5 (5.00" OD) |
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|
Blank | 0.63 |
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— | 5 | 0.5 | Blank | — | — | 3.88 | ASA FLG,SS,ROT,5"OD,BLANK,(4) .625"BH,3.88"BC,O-R GROOVE |
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ASA500X00GR | $342.50 | |||||||
ASA 1.5 (5.00" OD) |
|
|
1.51 | 0.63 |
|
— | 5 | 0.5 | 1.51 | 1.44 | 0.25 | 3.88 | ASA FLG,SS,ROT,5"OD ASA,1.51"C BORE,(4).625"BH,3.88"BC,OR GRV |
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ASA500X15GR | $363.00 | |||||||
ASA 1.5 (5.00" OD) |
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2.01 | 0.63 |
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— | 5 | 0.5 | 2.01 | 1.94 | 0.25 | 3.88 | ASA FLG,SS,ROT,5"OD ASA,2.01"C BORE,(4).625"BH,3.88"BC,OR GRV |
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ASA500X20GR | P.O.R. | |||||||
ASA 1.5 (5.00" OD) |
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|
2.51 | 0.63 |
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— | 5 | 0.5 | 2.51 | 2.44 | 0.25 | 3.88 | ASA Grooved Flanges (rotatable) |
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ASA500X25GR | P.O.R. | |||||||
ASA 2 (6.00" OD) |
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Blank | 0.75 |
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— | 6 | 0.5 | Blank | — | — | 4.75 | ASA FLG,SS,ROT,6"OD ASA,BLANK, (4).750"BH,4.75"BC,O-R GRV |
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ASA600X00GR | $446.50 | |||||||
ASA 2 (6.00" OD) |
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2.01 | 0.75 |
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— | 6 | 0.5 | 2.01 | 1.94 | 0.25 | 4.75 | ASA FLG,SS,ROT,6"OD ASA,2.01"C BORE,(4).750"BH,4.75"BC,OR GRV |
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ASA600X20GR | $456.00 | |||||||
ASA 2 (6.00" OD) |
|
|
2.51 | 0.75 |
|
— | 6 | 0.5 | 2.51 | 2.44 | 0.25 | 4.75 | ASA FLG,SS,ROT,6"OD ASA,2.51"C BORE,(4).750"BH,4.75"BC,OR GRV |
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ASA600X25GR | $414.50 | |||||||
ASA 2 (6.00" OD) |
|
|
3.01 | 0.75 |
|
— | 6 | 0.5 | 3.01 | 2.94 | 0.25 | 4.75 | ASA FLG,SS,ROT,6"OD,3.01"C-BOR (4).75"BH,4.75"BC,O-R GROOVE |
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ASA600X30GR | $456.00 | |||||||
ASA 2 (6.00" OD) |
|
|
3.51 | 0.75 |
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— | 6 | 0.5 | 3.51 | 3.44 | 0.25 | 4.75 | ASA Grooved Flanges (rotatable) |
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ASA600X35GR | P.O.R. | |||||||
ASA 3 (7.50" OD) |
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|
Blank | 0.75 |
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— | 7.5 | 0.5 | Blank | — | — | 6 | ASA FLG,SS,ROT,7.50"OD,BLANK, (4).75"BH,6"BC,O-R GROOVE |
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ASA750X00GR | $480.00 | |||||||
ASA 3 (7.50" OD) |
|
|
3.01 | 0.75 |
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— | 7.5 | 0.5 | 3.01 | 2.94 | 0.25 | 6 | ASA FLG,SS,ROT,7.50"OD,3.01"C- BORE,(4).75"BH,6"BC,O-R GROOVE |
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ASA750X30GR | $517.00 | |||||||
ASA 3 (7.50" OD) |
|
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3.51 | 0.75 |
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— | 7.5 | 0.5 | 3.51 | 3.44 | 0.25 | 6 | ASA FLG,SS,ROT,7.50"ASA,3.51"C BORE,(4).750"BH,6"BC,O-R GRV |
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ASA750X35GR | $517.00 | |||||||
ASA 3 (7.50" OD) |
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4.01 | 0.75 |
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— | 7.5 | 0.5 | 4.01 | 3.92 | 0.25 | 6 | ASA FLG,SS,ROT,7.5"OD,4.01"C- BORE,(4).75"BH,6"BC,O-R GRV |
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ASA750X40GR | $517.00 | |||||||
ASA 4 (9.00" OD) |
|
|
Blank | 0.75 |
|
— | 9 | 0.5 | Blank | — | — | 7.5 | ASA FLG,SS,ROT,9"OD ASA,BLANK, (8).75"BLTHLS,7.5"BC,O-R GRV |
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ASA900X00GR | $536.00 | |||||||
ASA 4 (9.00" OD) |
|
|
4.01 | 0.75 |
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— | 9 | 0.5 | 4.01 | 3.92 | 0.25 | 7.5 | ASA FLG,SS,ROT,9"OD ASA,4.01"C BORE,(8).750"BH,7.50"BC,OR GRV |
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ASA900X40GR | $555.00 | |||||||
ASA 4 (9.00" OD) |
|
|
6.02 | 0.75 |
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— | 9 | 0.5 | 6.02 | 5.92 | 0.25 | 7.5 | ASA FLG,SS,ROT,9"OD,6.02"CBORE (8).75"BH,7.5"BC,O-R GRV |
|
ASA900X60GR | $555.00 |
Flange Size/OD | Type | Flange Material | Drawing | Bore | Bolt Hole Dia. | # of Bolt Holes | Note | Dim A | Dim B | Dim C | Dim D | Dim E | Dim F | Description |
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Part Number | Price | In Stock | Add To Cart | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flange Size/OD | Type | Flange Material | Drawing | Bore | Bolt Hole Dia. | # of Bolt Holes | Note | Dim A | Dim B | Dim C | Dim D | Dim E | Dim F | Description |
|
Part Number | Price | In Stock | Add To Cart | ||||
ASA 6 (279.40 mm OD) |
|
|
Blank | 20.6 |
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— | 279.4 | 19.1 | Blank | — | — | 241.3 | ASA FLG,SS,ROT,11"OD,BLANK, (8).812"BH,9.50"BC,O-R GRV |
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ASA1100X00GR | $824.00 | |||||||
ASA 6 (279.40 mm OD) |
|
|
152.9 | 20.6 |
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— | 279.4 | 19.1 | 152.9 | 150.4 | 9.7 | 241.3 | ASA FLG,SS,ROT,11"OD,6.02"C- BORE,(8).812"BH,9.50"BC,OR GRV |
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ASA1100X60GR | $869.00 | |||||||
ASA 6 (279.40 mm OD) |
|
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203.708 | 20.6 |
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— | 279.4 | 19.1 | 203.7 | 200.2 | 9.7 | 241.3 | ASA FLG,SS,ROT,11"OD,8.02"C- BORE,(8).812"BH,9.5"BC,O-R GRV |
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ASA1100X80GR | $869.00 | |||||||
ASA 8 (342.90 mm OD) |
|
|
Blank | 20.6 |
|
— | 342.9 | 19.1 | Blank | — | — | 298.5 | ASA FLG,SS,ROT,13.50"OD,BLANK, (8).812"BH,11.75"BC,O-R GRV |
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ASA1350X00GR | P.O.R. | |||||||
ASA 8 (342.90 mm OD) |
|
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254.5 | 20.6 |
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— | 342.9 | 19.1 | 254.5 | 251 | 9.7 | 298.5 | ASA FLG,SS,ROT,13.50"OD,10.02" C-BRE,(8).812BH,11.75BC,OR GRV |
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ASA1350X10GR | $1,053.00 | |||||||
ASA 8 (342.90 mm OD) |
|
|
203.708 | 20.6 |
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— | 342.9 | 19.1 | 203.7 | 200.2 | 9.7 | 298.5 | ASA FLG,SS,ROT,13.5"OD,8.02"C- BORE,8).812"BH,11.75"BC,OR GRV |
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ASA1350X80GR | $1,053.00 | |||||||
ASA 10 (406.40 mm OD) |
|
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Blank | 20.6 |
|
406.4 | 19.1 | Blank | — | — | 362 | ASA FLG,SS,ROT,16"OD,BLANK, (12).812"BH,14.25"BC,O-R GRV |
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ASA1600X00GR | $1,877.00 | ||||||||
ASA 10 (406.40 mm OD) |
|
|
254.5 | 20.6 |
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— | 406.4 | 19.1 | 254.5 | 251 | 9.7 | 362 | ASA FLG,SS,ROT,16"OD,10.02"C- BRE,(12).812"BH,14.25BC,O-RGRV |
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ASA1600X10GR | $1,774.50 | |||||||
ASA 10 (406.40 mm OD) |
|
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305.3 | 20.6 |
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— | 406.4 | 19.1 | 305.3 | 301.8 | 9.7 | 362 | ASA FLG,SS,ROT,16"OD,12.02"C- BRE,(12).812"BH,14.25BC,O-RGRV |
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ASA1600X12GR | $1,774.50 | |||||||
ASA 1 (107.95 mm OD) |
|
|
Blank | 16 |
|
— | 108 | 12.7 | Blank | — | — | 79.5 | ASA FLG,SS,ROT,4.25"OD,BLANK, (4).625"BH,3.125"BC,O-R GRV |
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ASA425X00GR | P.O.R. | |||||||
ASA 1 (107.95 mm OD) |
|
|
25.7 | 16 |
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— | 108 | 12.7 | 25.7 | 23.9 | 6.4 | 79.5 | ASA FLG,SS,ROT,4.25"OD,1.01"C- BORE,(4).625BH,3.125"BC,OR GRV |
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ASA425X10GR | $301.00 | |||||||
ASA 1 (107.95 mm OD) |
|
|
38.354 | 16 |
|
— | 108 | 12.7 | 38.4 | 36.6 | 6.4 | 79.5 | ASA FLG,SS,ROT,4.25"OD,1.51"C- BORE,(4).625BH,3.125BC,O-R GRV |
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ASA425X15GR | $301.00 | |||||||
ASA 1.5 (127.00 mm OD) |
|
|
Blank | 16 |
|
— | 127 | 12.7 | Blank | — | — | 98.6 | ASA FLG,SS,ROT,5"OD,BLANK,(4) .625"BH,3.88"BC,O-R GROOVE |
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ASA500X00GR | $342.50 | |||||||
ASA 1.5 (127.00 mm OD) |
|
|
38.354 | 16 |
|
— | 127 | 12.7 | 38.4 | 36.6 | 6.4 | 98.6 | ASA FLG,SS,ROT,5"OD ASA,1.51"C BORE,(4).625"BH,3.88"BC,OR GRV |
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ASA500X15GR | $363.00 | |||||||
ASA 1.5 (127.00 mm OD) |
|
|
51.054 | 16 |
|
— | 127 | 12.7 | 51.1 | 49.3 | 6.4 | 98.6 | ASA FLG,SS,ROT,5"OD ASA,2.01"C BORE,(4).625"BH,3.88"BC,OR GRV |
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ASA500X20GR | P.O.R. | |||||||
ASA 1.5 (127.00 mm OD) |
|
|
63.754 | 16 |
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— | 127 | 12.7 | 63.8 | 62 | 6.4 | 98.6 | ASA Grooved Flanges (rotatable) |
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ASA500X25GR | P.O.R. | |||||||
ASA 2 (152.40 mm OD) |
|
|
Blank | 19.1 |
|
— | 152.4 | 12.7 | Blank | — | — | 120.7 | ASA FLG,SS,ROT,6"OD ASA,BLANK, (4).750"BH,4.75"BC,O-R GRV |
|
ASA600X00GR | $446.50 | |||||||
ASA 2 (152.40 mm OD) |
|
|
51.054 | 19.1 |
|
— | 152.4 | 12.7 | 51.1 | 49.3 | 6.4 | 120.7 | ASA FLG,SS,ROT,6"OD ASA,2.01"C BORE,(4).750"BH,4.75"BC,OR GRV |
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ASA600X20GR | $456.00 | |||||||
ASA 2 (152.40 mm OD) |
|
|
63.754 | 19.1 |
|
— | 152.4 | 12.7 | 63.8 | 62 | 6.4 | 120.7 | ASA FLG,SS,ROT,6"OD ASA,2.51"C BORE,(4).750"BH,4.75"BC,OR GRV |
|
ASA600X25GR | $414.50 | |||||||
ASA 2 (152.40 mm OD) |
|
|
76.454 | 19.1 |
|
— | 152.4 | 12.7 | 76.5 | 74.7 | 6.4 | 120.7 | ASA FLG,SS,ROT,6"OD,3.01"C-BOR (4).75"BH,4.75"BC,O-R GROOVE |
|
ASA600X30GR | $456.00 | |||||||
ASA 2 (152.40 mm OD) |
|
|
89.2 | 19.1 |
|
— | 152.4 | 12.7 | 89.2 | 87.4 | 6.4 | 120.7 | ASA Grooved Flanges (rotatable) |
|
ASA600X35GR | P.O.R. | |||||||
ASA 3 (190.50 mm OD) |
|
|
Blank | 19.1 |
|
— | 190.5 | 12.7 | Blank | — | — | 152.4 | ASA FLG,SS,ROT,7.50"OD,BLANK, (4).75"BH,6"BC,O-R GROOVE |
|
ASA750X00GR | $480.00 | |||||||
ASA 3 (190.50 mm OD) |
|
|
76.454 | 19.1 |
|
— | 190.5 | 12.7 | 76.5 | 74.7 | 6.4 | 152.4 | ASA FLG,SS,ROT,7.50"OD,3.01"C- BORE,(4).75"BH,6"BC,O-R GROOVE |
|
ASA750X30GR | $517.00 | |||||||
ASA 3 (190.50 mm OD) |
|
|
89.2 | 19.1 |
|
— | 190.5 | 12.7 | 89.2 | 87.4 | 6.4 | 152.4 | ASA FLG,SS,ROT,7.50"ASA,3.51"C BORE,(4).750"BH,6"BC,O-R GRV |
|
ASA750X35GR | $517.00 | |||||||
ASA 3 (190.50 mm OD) |
|
|
101.854 | 19.1 |
|
— | 190.5 | 12.7 | 101.9 | 99.6 | 6.4 | 152.4 | ASA FLG,SS,ROT,7.5"OD,4.01"C- BORE,(4).75"BH,6"BC,O-R GRV |
|
ASA750X40GR | $517.00 | |||||||
ASA 4 (228.60 mm OD) |
|
|
Blank | 19.1 |
|
— | 228.6 | 12.7 | Blank | — | — | 190.5 | ASA FLG,SS,ROT,9"OD ASA,BLANK, (8).75"BLTHLS,7.5"BC,O-R GRV |
|
ASA900X00GR | $536.00 | |||||||
ASA 4 (228.60 mm OD) |
|
|
101.854 | 19.1 |
|
— | 228.6 | 12.7 | 101.9 | 99.6 | 6.4 | 190.5 | ASA FLG,SS,ROT,9"OD ASA,4.01"C BORE,(8).750"BH,7.50"BC,OR GRV |
|
ASA900X40GR | $555.00 | |||||||
ASA 4 (228.60 mm OD) |
|
|
152.9 | 19.1 |
|
— | 228.6 | 12.7 | 152.9 | 150.4 | 6.4 | 190.5 | ASA FLG,SS,ROT,9"OD,6.02"CBORE (8).75"BH,7.5"BC,O-R GRV |
|
ASA900X60GR | $555.00 |
All dimensions listed in the table above, unless otherwise stated, are in inches.
All dimensions listed in the table above, unless otherwise stated, are in millimeters.
Accessories Table
Description | For | Per Package |
|
Part Number | Price | In Stock | Add Item | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
Description | For | Per Package |
|
Part Number | Price | In Stock | Add Item | ||||
O-Rings (Fluorocarbon) | Size 1 ASA Flanges | 1 |
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O-Rings (Fluorocarbon) | Size 1.5 ASA Flanges | 1 |
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O-Rings (Fluorocarbon) | Size 2 ASA Flanges | 1 |
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O-Rings (Fluorocarbon) | Size 3 ASA Flanges | 1 |
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O-Rings (Fluorocarbon) | Size 4 ASA Flanges | 1 |
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O-Rings (Fluorocarbon) | Size 6 ASA Flanges | 1 |
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O-Rings (Fluorocarbon) | Size 8 ASA Flanges | 1 |
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O-Rings (Fluorocarbon) | Size 10 ASA Flanges | 1 |
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Bolt Sets, 9/16—12 x 1.50" | Size 1 ASA & 1.5 ASA Flanges | 4 |
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Bolt Sets, 5/8—11 x 1.75" | Size 2 ASA & 3 ASA Flanges | 4 |
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Bolt Sets, 5/8—11 x 1.75" | Size 4 ASA Flanges | 8 |
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Bolt Sets, 3/4—10 x 2.50" | Size 6 ASA & 8 ASA Flanges | 8 |
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Bolt Sets, 3/4—10 x 2.50" | Size 10 ASA Flanges | 12 |
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