O-RINGS

CALL (800) 221-9723 • FAX (818) 882-7028 • EMAIL [email protected] • WEBSITE www.rpiparts.com
O-RINGS
ETHYLENE PROPYLENE RUBBER (EPM, EPDM)
Temperature range: -65˚ to +300˚F (-54˚ to +149˚C).
EP is recommended for:
• Phosphate ester base hydraulic fluids
• Steam (to 400˚F) (204˚C)
• Water
• Silicone oils and greases
• Dilute acids
• Dilute alkalies
• Ketones (MEK, acetone)
• Alcohols
EP is not recommended for:
• Petroleum oils
• Di-ester base lubricants
This information is provided as a guideline and quick reference for approximate identification of an Oring. There may be many factors that need to be considered when determining proper O-ring material.
Further investigation for a given application may be required. In addition, to more accurately determine
the dimensions of an O-ring, precision measuring equipment (such as Calipers) should be used.
HOW TO USE THIS CHART
Lay O-ring over cross-section pictorials
to determine approximate cross-section
diameter. (For best results cut O-ring and
place round cross-section onto pictorial.)
HOW TO USE THIS CHART
1. Align outer edge of O-ring to the 0.00
line.
2. Read opposite edge of O-ring for
approximate outside diameter (O.D.).
STANDARD CROSS-SECTIONS
PER AS568A
SILICONE RUBBER (SI)
Temperature range: -65˚ to +450˚F (-54˚C to +232˚C).
Silicones are recommended for:
• Dynamic sealing application
• Dry heat
• High-aniline point oils
• Chlorinated di-phenyls
Silicones are not recommended for:
• Most petroleum fluids
• Ketones (MEK, acetone)
• Water and steam
FLUOROCARBON RUBBER VITON (FKM)
Temperature range: -15˚ to +400˚F (-29˚ to +204˚C).
FKM is recommended for:
• Petroleum oils
• Di-ester base lubricants
• Silicate ester base lubricants
• Silicone fluids and greases
• Halogenated hydrocarbons (carbon tetrachloride,
trichloroethylene
• Selected phosphate ester fluids
• Acids
OTHER AVAILABLE
CROSS-SECTIONS
FKM is not recommended for:
• Ketones (MEK, acetone)
• Skydrol fluids
NITRILE OR BUNA N (NBR)
Temperature range of -65˚ to +275˚F (-54˚ to +135˚C).
Nitrile is recommended for:
• General purpose sealing
• Petroleum oils and fluids
• Cold water
• Silicone greases and oils
• Di-Ester base lubricants
• Ethylene Clycol base fluids (Hydrolubes)
Nitrite is not recommended for:
• Halogenated hydrocarbons (carbon, tetrachloride,
trichlorethylene)
• Nitro hydrocarbons (nitrobenzene, aniline)
• Phosphate ester hydraulic fluids (Skydrol, Fyrquel,
Pydraul)
• Ketones (MEK, acetone)
• Strong acids
• Ozone
Source of information: Parker O-Ring Handbook, Parker
Seals, ORD5700, Parker Hannifin Corporation, Cleveland, OH
Page 1 of 3
O-RING CHART BY SIZE
ID
.239
.288
.165
.032
.029
.070
.070
.176
.176
.028
.042
.042
.042
.547
.056
.056
.056
.400
.489
.070
.101
.101
.114
.114
.114
.145
.145
.145
.176
.176
.176
.208
.208
.208
.239
.239
.239
.301
.301
.301
.301
.301
.364
.364
.426
OD
.301
.351
.229
.108
.109
.150
.150
.256
.256
.110
.142
.142
.142
.649
.176
.176
.176
.524
.629
.210
.241
.241
.254
.254
.254
.285
.285
.285
.316
.316
.316
.348
.348
.348
.379
.379
.379
.441
.441
.441
.441
.441
.504
.504
.566
IND PART #
Custom
Metric
Custom
Custom
AS568-001
5-051
Custom
Custom
Custom
Q4001
AS568-002
AS568-002
AS568-002
5-001
AS568-003
AS568-003
AS568-003
Custom
AS568-014
AS568-004
AS568-005
AS568-005
AS568-006
AS568-006
AS568-006
AS568-007
AS568-007
AS568-007
AS568-008
AS568-008
AS568-008
AS568-009
AS568-009
AS568-009
AS568-010
AS568-010
AS568-010
AS568-011
AS568-011
AS568-011
AS568-011
AS568-011
AS568-012
AS568-012
AS568-013
MATERIAL
DURO QTY
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
EPDM
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
EPDM
70
12
EPDM
70
12
Viton
75
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Viton
90
12
EPDM
70
12
Silicone
70
6
Nitrile (Buna N)
70
12
Viton
75
12
EPDM
70
12
Viton
75
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
EPDM
70
12
EPDM
70
12
Viton
70
12
Silicone
70
12
Nitrile (Buna N)
70
12
Viton
70
12
EPDM
70
6
EPDM
70
12
Natural Silicone
70
12
Teflon
n/a
6
Nitrile (Buna N)
70
12
Viton
70
12
Silicone
70
12
Nitrile (Buna N)
70
12
Teflon
n/a
6
Silicone
70
6
Nitrile (Buna N)
70
12
Neoprene
70
6
Silicone
70
12
EPDM
80
6
Viton
60
12
Nitrile (Buna N)
70
12
EPDM
70
12
Nitrile (Buna N)
70
12
RPI
PART #
RPO388
RPO485
RPO326
RPO488
RPO608
RPO316
RPO341
RPO439
RPO317
RPO318
RPO334
RPO340
RPO490
RPO325
RPO355
RPO444
RPO438
RPO354
RPO322
RPO390
RPO607
RPO335
RPO321
RPO344
RPO491
RPO448
RPO323
RPO387
RPO395
RPO356
RPO357
RPO353
RPO358
RPO610
RPO389
RPO605
RPO346
RPO612
LIO005
RPO244
RPO350
RPO606
RPO613
RPO345
RPO361
X-SEC
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.103
.103
.103
.103
.103
.103
.103
.103
.103
.103
.103
.103
.103
.103
.103
.139
.139
.139
.139
.139
.210
ID
.426
.426
.489
.489
.489
.551
.551
.551
.614
.676
.739
.739
.739
.801
.801
.801
.864
.926
1.051
1.114
1.239
1.489
2.114
2.239
.206
.237
.362
.362
.362
.424
.424
.487
.549
.924
1.049
1.174
2.425
3.237
3.987
.296
.796
.859
3.484
4.359
.912
OD
.566
.566
.629
.625
.629
.691
.691
.691
.754
.816
.879
.879
.879
.941
.941
.941
1.004
1.066
1.191
1.254
1.379
1.629
2.254
2.379
.412
.443
.568
.568
.568
.630
.630
.693
.755
1.130
1.255
1.380
2.631
3.443
4.193
.574
1.074
1.137
3.762
4.637
1.332
IND PART #
AS568-013
AS568-013
AS568-014
AS568-014
AS568-014
AS568-015
AS568-015
AS568-015
AS568-016
AS568-017
AS568-018
AS568-018
AS568-018
AS568-019
AS568-019
AS568-019
AS568-020
AS568-021
AS568-023
AS568-024
AS568-026
AS568-029
AS568-034
AS568-035
AS568-107
AS568-108
AS568-110
AS568-110
AS568-110
AS568-111
AS568-111
AS568-112
AS568-113
AS568-119
AS568-121
AS568-123
AS568-143
AS568-152
AS568-155
AS568-203
AS568-211
AS568-212
AS568-238
AS568-245
AS568-317
MATERIAL
DURO QTY
Silicone
70
6
EPDM
70
12
Viton
70
12
EPDM
70
12
Silicone
70
12
Nitrile (Buna N)
70
12
Viton
70
12
EPDM
70
6
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Viton
70
12
EPDM
70
12
Nitrile (Buna N)
70
12
Silicone
70
6
EPDM
70
12
EPDM
70
12
Silicone
70
6
Nitrile (Buna N)
70
12
Silicone
70
6
Silicone
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
6
EPDM
70
12
EPDM
70
6
Nitrile (Buna N)
70
12
Silicone
70
6
EPDM
70
12
Nitrile (Buna N)
70
12
EPDM
70
12
Nitrile (Buna N)
70
12
EPDM
80
6
Silicone
70
12
Silicone
70
6
Silicone
70
12
Nitrile (Buna N)
70
12
Viton
70
3
Nitrile (Buna N)
70
1
Silicone
60
6
Nitrile (Buna N)
70
12
Silicone
70
12
Viton
70
Nitrile (Buna N)
70
6
Nitrile (Buna N)
70
6
CALL (800) 221-9723 • FAX (818) 882-7028 • EMAIL [email protected] • WEBSITE www.rpiparts.com
X-SEC
.031
.031
.032
.038
.040
.040
.040
.040
.040
.041-Q
.050
.050
.050
.051
.060
.060
.060
.062
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
As of March, 2009
O-rings are sold separately in quantities indicated above. For O-ring Kits, see pages 503-504.
RPI
PART #
RPO324
RPO328
RPO617
RPO493
RPO309
RPO308
RPO496
RPO494
RPO497
RPO319
RPO310
RPO352
RPO486
RPO450
RPO311
RPO484
RPO487
RPO495
RPO301
RPO312
RPO313
RPO489
RPO307
RPO320
RPO609
RPO314
RPO342
RPO359
RPO306
RPO327
RPO330
RPO315
RPO339
RPO492
RPO305
RPO329
RPO386
RPO304
RPO331
RPO343
RPO360
RPO385
RPO303
RPO498
RPO302
O-RING CHART BY PART #
ID
3.987
.296
.489
.426
.364
.301
.239
.176
.114
.070
.029
.042
.056
.070
.101
.145
.208
.551
.614
.676
.028
.114
2.114
1.051
.362
.239
.801
.489
.176
.288
.239
.176
.301
.739
1.489
.208
.739
.551
.145
.301
2.239
4.359
2.425
.796
.042
OD
4.193
.574
.629
.566
.504
.441
.379
.316
.254
.150
.109
.142
.176
.210
.241
.285
.348
.691
.754
.816
.110
.254
2.254
1.191
.568
.301
.941
.629
.316
.351
.379
.316
.441
.879
1.629
.348
.879
.691
.285
.441
2.379
4.637
2.631
1.074
.142
IND PART #
AS568-155
AS568-203
AS568-014
AS568-013
AS568-012
AS568-011
AS568-010
AS568-008
AS568-006
5-051
AS568-001
AS568-002
AS568-003
AS568-004
AS568-005
AS568-007
AS568-009
AS568-015
AS568-016
AS568-017
Q4001
AS568-006
AS568-034
AS568-023
AS568-110
Custom
AS568-019
AS568-014
AS568-008
Metric
AS568-010
AS568-008
AS568-011
AS568-018
AS568-029
AS568-009
AS568-018
AS568-015
AS568-007
AS568-011
AS568-035
AS568-245
AS568-143
AS568-211
AS568-002
MATERIAL
DURO QTY
Nitrile (Buna N)
70
1
Silicone
60
6
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
EPDM
70
12
EPDM
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Viton
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Viton
70
12
Natural Silicone
70
12
Nitrile (Buna N)
70
12
Teflon
n/a
6
Teflon
n/a
6
Neoprene
70
6
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Viton
70
12
Viton
70
12
Viton
70
12
Viton
70
12
Silicone
70
12
Nitrile (Buna N)
70
6
Nitrile (Buna N)
70
6
Nitrile (Buna N)
70
12
Nitrile (Buna N)
70
12
Viton
90
12
RPI
PART #
RPO353
RPO354
RPO355
RPO356
RPO357
RPO358
RPO359
RPO360
RPO361
RPO385
RPO386
RPO387
RPO388
RPO389
RPO390
RPO395
RPO438
RPO439
RPO444
RPO448
RPO450
RPO484
RPO485
RPO486
RPO487
RPO488
RPO489
RPO490
RPO491
RPO492
RPO493
RPO494
RPO495
RPO496
RPO497
RPO498
RPO605
RPO606
RPO607
RPO608
RPO609
RPO610
RPO612
RPO613
RPO617
X-SEC
.103
.070
.070
.103
.103
.103
.070
.070
.210
.070
.070
.103
.070
.103
.070
.103
.070
.070
.070
.103
.051
.060
.070
.050
.060
.070
.070
.070
.103
.070
.038
.040
.062
.040
.040
.070
.103
.139
.070
.070
.070
.103
.103
.139
.032
ID
.487
.926
.801
.424
.424
.549
.145
.301
.912
.301
.239
.362
.426
1.049
1.114
.362
.864
.551
.801
.237
.547
.056
.426
.042
.056
.489
.101
.739
.206
.208
.032
.176
.400
.070
.176
.364
1.174
.859
1.239
.489
.114
.924
3.237
3.484
.165
OD
.693
1.066
.941
.630
.630
.755
.285
.441
1.332
.441
.379
.568
.566
1.255
1.254
.568
1.004
.691
.941
.443
.649
.176
.566
.142
.176
.625
.241
.879
.412
.348
.108
.256
.524
.150
.256
.504
1.380
1.137
1.379
.629
.254
1.130
3.443
3.762
.229
IND PART #
AS568-112
AS568-021
AS568-019
AS568-111
AS568-111
AS568-113
AS568-007
AS568-011
AS568-317
AS568-011
AS568-010
AS568-110
AS568-013
AS568-121
AS568-024
AS568-110
AS568-020
AS568-015
AS568-019
AS568-108
5-001
AS568-003
AS568-013
AS568-002
AS568-003
AS568-014
AS568-005
AS568-018
AS568-107
AS568-009
Custom
Custom
Custom
Custom
Custom
AS568-012
AS568-123
AS568-212
AS568-026
AS568-014
AS568-006
AS568-119
AS568-152
AS568-238
Custom
MATERIAL
DURO QTY
Nitrile (Buna N)
70
12
Silicone
70
6
Silicone
70
6
Nitrile (Buna N)
70
12
EPDM
70
12
EPDM
80
6
EPDM
70
6
EPDM
80
6
Nitrile (Buna N)
70
6
Viton
60
12
Silicone
70
6
Silicone
70
6
Silicone
70
6
Silicone
70
6
Silicone
70
6
EPDM
70
12
EPDM
70
12
EPDM
70
6
EPDM
70
12
EPDM
70
6
Silicone
70
6
Viton
75
12
EPDM
70
12
EPDM
70
12
EPDM
70
12
EPDM
70
12
EPDM
70
12
EPDM
70
12
EPDM
70
12
Silicone
70
12
EPDM
70
12
EPDM
70
12
Viton
75
12
EPDM
70
12
Viton
75
12
EPDM
70
12
Silicone
70
12
Silicone
70
12
Silicone
70
12
Silicone
70
12
Silicone
70
12
Silicone
70
12
Viton
70
3
Viton
70
3
Nitrile (Buna N)
70
12
CALL (800) 221-9723 • FAX (818) 882-7028 • EMAIL [email protected] • WEBSITE www.rpiparts.com
X-SEC
.103
.139
.070
.070
.070
.070
.070
.070
.070
.040
.040
.050
.060
.070
.070
.070
.070
.070
.070
.070
.041-Q
.070
.070
.070
.103
.031
.070
.070
.070
.031
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.070
.139
.103
.139
.050
As of March, 2009
O-rings are sold separately in quantities indicated above. For O-ring Kits, see pages 503-504.
RPI
PART #
LIO005
RPO244
RPO301
RPO302
RPO303
RPO304
RPO305
RPO306
RPO307
RPO308
RPO309
RPO310
RPO311
RPO312
RPO313
RPO314
RPO315
RPO316
RPO317
RPO318
RPO319
RPO320
RPO321
RPO322
RPO323
RPO324
RPO325
RPO326
RPO327
RPO328
RPO329
RPO330
RPO331
RPO334
RPO335
RPO339
RPO340
RPO341
RPO342
RPO343
RPO344
RPO345
RPO346
RPO350
RPO352