Spring Energized Seals for hydraulic fluid sealing. Designed for extreme and demanding applications.
A chart listing the most popular compounds and their fluid compatibility / technical information.
Seal & Design Canada: Toronto, Ontario 
Headquarters: Clarence, NY Military & Aerospace Spec O-Rings
Compounds are approved to nearly every military, aerospace, ASTM, SAE, automotive, petroleum industry and commercial specification. The most commonly used specifications are the AMS, AS, AN, M, MS, MIL, and NAS specifications.
Specifications indicated by asterisk (*) require that the o-ring manufacturer be on The Qualified Products List (QPL).
Please contact us for more information about ordering these products.
Part Number
Drawing
Specification
Material
Durometer
+/- 5
N/A
N/A
AMS 3209
Neoprene (CR)
70
N/A
N/A
AMS 3325
Fluorosilicone (FVMQ)
60
N/A
N/A
AMS 3384
Fluorocarbon (FKM)
75
N/A
N/A
AMS 7257*
Fluorocarbon (FKM)
75
AS3581
AS3581
AMS 7259*
Fluorocarbon (FKM)
90
AS3569
AS3569
AMS 7270*
Nitrile (NBR)
70
AS3578
AS3578
AMS 7271*
Nitrile (NBR)
65
AS3570
AS3570
AMS 7274*
Nitrile (NBR)
70
AS3208
AS3208
AMS 7276*
Fluorocarbon (FKM)
75
AS3209
AS3209
AMS 7276*
Fluorocarbon (FKM)
75
M83485
AS83485
AMS 7287*
Fluorocarbon (FKM)
75
MS29512
AS29512
AMS P 5315*
Nitrile (NBR)
65
MS29513
AS29513
AMS P 5315*
Nitrile (NBR)
65
MS28778
AS28778
AMS P 5510*
Nitrile (NBR)
90
M83461/1
AS83461/1
AMS P 83461*
Nitrile (NBR)
70
M83461/2
AS83461/2
AMS P 83461*
Nitrile (NBR)
70
MS29561
AS29561
AMS R 7362 Ty I
Nitrile (NBR)
70
M25988/3
MIL-R-25988/3
MIL DTL 25988 Ty I Cl 1 Gr 60
Fluorosilicone (FVMQ)
60
M25988/1
MIL-R-25988/1
MIL DTL 25988 Ty I Cl 1 Gr 70
Fluorosilicone (FVMQ)
70
M25988/2
MIL-R-25988/2
MIL DTL 25988 Ty I Cl 3 Gr 75
Fluorosilicone (FVMQ)
75
MS25988/4
MIL-R-25988/4
MIL DTL 25988 Ty I Cl 1 Gr 80
Fluorosilicone (FVMQ)
80
N/A
N/A
MIL G 21569 Cl 1
Nitrile (NBR)
70
M22050-1
N/A
MIL G 22050 Gr 1
Ethylene Propylene Diene (EPDM)
65
M22050-1
N/A
MIL G 22050 Gr 2
Ethylene Propylene Diene (EPDM)
80
MS28775
AS28775
MIL P 25732*
Nitrile (NBR)
70
N/A
N/A
MIL P 82745
Nitrile (NBR)
70
N/A
N/A
MIL PRF 1149 Ty I Cl 1
Neoprene (CR)
50
N/A
N/A
MIL PRF 1149 Ty I Cl 2
Silicone (SBR)
50
N/A
N/A
MIL PRF 1149 Ty I Cl 5
Nitrile (NBR)
50
N/A
N/A
MIL PRF 1149 Ty II Cl 1
Neoprene (CR)
65
N/A
N/A
MIL PRF 1149 Ty II Cl 5
Nitrile (NBR)
65
N/A
N/A
MIL PRF 1149 Ty II Cl 2
Silicone (SBR)
65
N/A
N/A
MIL PRF 6855 Cl 2A Ty A Gr 60
Neoprene (CR)
60
N/A
N/A
MIL PRF 6855 Cl 1 Ty A Gr 40
Nitrile (NBR)
40
N/A
N/A
MIL PRF 6855 Cl 1 Ty A Gr 50
Nitrile (NBR)
50
N/A
N/A
MIL PRF 6855 Cl 1 Ty A Gr 60
Nitrile (NBR)
60
Headquarters: Clarence, NY
Seal & Design Canada: Toronto, Ontario
