Skip to content

O-Rings

FSC 5331: O-Rings

Federal Supply Class (FSC) 5331 covers O-rings, the round-section elastomeric seals used to seal static and dynamic joints. The catalog includes O-rings built to AS568, MIL-SPEC, and industry standards.

O-rings seal connections in hydraulic, pneumatic, fuel, and fluid systems by compressing in a groove. They are among the most widely used sealing elements in machinery.

Common materials include nitrile (Buna-N), fluorocarbon (Viton), silicone, EPDM, and PTFE, selected for fluid compatibility and temperature range. Sizes follow standard dash-number series for repeatable replacement.

5331-01-320-9293 (BS)

NIIN: 01-320-9293
In stock
NSN: 5331-01-320-9293
FSC Code: 5331
MPN: BS

5331-01-205-4259 (BS)

NIIN: 01-205-4259
In stock
NSN: 5331-01-205-4259
FSC Code: 5331
MPN: BS

5331-01-317-9496 (BS)

NIIN: 01-317-9496
In stock
NSN: 5331-01-317-9496
FSC Code: 5331
MPN: BS

5331-01-497-9438 (6218E70ITEM6)

NIIN: 01-497-9438
In stock
NSN: 5331-01-497-9438
FSC Code: 5331
MPN: 6218E70ITEM6

5331-01-189-8334 (BRR20-118-SS)

NIIN: 01-189-8334
In stock
NSN: 5331-01-189-8334
FSC Code: 5331
MPN: BRR20118SS

5331-00-576-5448 (BP62927)

NIIN: 00-576-5448
In stock
NSN: 5331-00-576-5448
FSC Code: 5331
MPN: BP62927

5331-01-565-8595 (621-025)

NIIN: 01-565-8595
In stock
NSN: 5331-01-565-8595
FSC Code: 5331
MPN: 621025

5331-01-163-5602 (BOS954007-801)

NIIN: 01-163-5602
In stock
NSN: 5331-01-163-5602
FSC Code: 5331
MPN: BOS954007801

5331-01-304-8493 (BN-6096)

NIIN: 01-304-8493
In stock
NSN: 5331-01-304-8493
FSC Code: 5331
MPN: BN6096

5331-01-307-2072 (BN-6096)

NIIN: 01-307-2072
In stock
NSN: 5331-01-307-2072
FSC Code: 5331
MPN: BN6096

5331-01-304-8494 (BN-6096)

NIIN: 01-304-8494
In stock
NSN: 5331-01-304-8494
FSC Code: 5331
MPN: BN6096

5331-22-269-1596 (62076-03H-0554)

NIIN: 22-269-1596
In stock
NSN: 5331-22-269-1596
FSC Code: 5331
MPN: 6207603H0554

5331-22-269-1595 (62076-03H-0465)

NIIN: 22-269-1595
In stock
NSN: 5331-22-269-1595
FSC Code: 5331
MPN: 6207603H0465

5331-01-263-4245 (BN-14.0-692F-B-A)

NIIN: 01-263-4245
In stock
NSN: 5331-01-263-4245
FSC Code: 5331
MPN: BN140692FBA

5331-01-263-6919 (BN-12.0-692F-8-E-3/8MONEL)

NIIN: 01-263-6919
In stock
NSN: 5331-01-263-6919
FSC Code: 5331
MPN: BN120692F8E38MONEL

5331-22-269-1564 (62061-07H-0362)

NIIN: 22-269-1564
In stock
NSN: 5331-22-269-1564
FSC Code: 5331
MPN: 6206107H0362

5331-01-094-5994 (B-MD-193-17)

NIIN: 01-094-5994
In stock
NSN: 5331-01-094-5994
FSC Code: 5331
MPN: BMD19317

5331-01-275-7619 (BM-924741-924822)

NIIN: 01-275-7619
In stock
NSN: 5331-01-275-7619
FSC Code: 5331
MPN: BM924741924822

5331-01-289-7508 (BM-1806A)

NIIN: 01-289-7508
In stock
NSN: 5331-01-289-7508
FSC Code: 5331
MPN: BM1806A

5331-00-291-9517 (BL-702528)

NIIN: 00-291-9517
In stock
NSN: 5331-00-291-9517
FSC Code: 5331
MPN: BL702528

5331-12-336-1251 (620.050.1110.04)

NIIN: 12-336-1251
In stock
NSN: 5331-12-336-1251
FSC Code: 5331
MPN: 620050111004

5331-00-998-2994 (BL-6541)

NIIN: 00-998-2994
In stock
NSN: 5331-00-998-2994
FSC Code: 5331
MPN: BL6541

5331-00-486-2535 (BL30083)

NIIN: 00-486-2535
In stock
NSN: 5331-00-486-2535
FSC Code: 5331
MPN: BL30083

5331-01-277-8813 (BK-222-P201A)

NIIN: 01-277-8813
In stock
NSN: 5331-01-277-8813
FSC Code: 5331
MPN: BK222P201A

5331-20-000-1982 (61-9929)

NIIN: 20-000-1982
In stock
NSN: 5331-20-000-1982
FSC Code: 5331
MPN: 619929

5331-01-285-9340 (BK220-P201A)

NIIN: 01-285-9340
In stock
NSN: 5331-01-285-9340
FSC Code: 5331
MPN: BK220P201A

5331-01-308-7351 (BK-221)

NIIN: 01-308-7351
In stock
NSN: 5331-01-308-7351
FSC Code: 5331
MPN: BK221

5331-00-949-9215 (BK104)

NIIN: 00-949-9215
In stock
NSN: 5331-00-949-9215
FSC Code: 5331
MPN: BK104

5331-01-472-3820 (S100-927-7)

NIIN: 01-472-3820
In stock
NSN: 5331-01-472-3820
FSC Code: 5331
MPN: S1009277

5331-01-034-6991 (BH18930)

NIIN: 01-034-6991
In stock
NSN: 5331-01-034-6991
FSC Code: 5331
MPN: BH18930

5331-01-263-6174 (BG-3.0-125F-01-B1-0)

NIIN: 01-263-6174
In stock
NSN: 5331-01-263-6174
FSC Code: 5331
MPN: BG30125F01B10

5331-01-286-7798 (BG-2.5-125F-01-B1-0)

NIIN: 01-286-7798
In stock
NSN: 5331-01-286-7798
FSC Code: 5331
MPN: BG25125F01B10

5331-01-320-5833 (BG-2-1/2-692F-B1-0)

NIIN: 01-320-5833
In stock
NSN: 5331-01-320-5833
FSC Code: 5331
MPN: BG212692FB10

5331-00-103-9796 (BG25C85)

NIIN: 00-103-9796
In stock
NSN: 5331-00-103-9796
FSC Code: 5331
MPN: BG25C85

5331-01-282-1416 (BG-1.0-125-01-B1-0)

NIIN: 01-282-1416
In stock
NSN: 5331-01-282-1416
FSC Code: 5331
MPN: BG1012501B10

5331-01-476-2460 (AS568-906/AMS3209)

NIIN: 01-476-2460
In stock
NSN: 5331-01-476-2460
FSC Code: 5331
MPN: AS568906AMS3209

5331-01-476-2440 (61-8661)

NIIN: 01-476-2440
In stock
NSN: 5331-01-476-2440
FSC Code: 5331
MPN: 618661

5331-01-476-2435 (61-8626)

NIIN: 01-476-2435
In stock
NSN: 5331-01-476-2435
FSC Code: 5331
MPN: 618626

5331-01-476-2455 (AS568-920/AS3209)

NIIN: 01-476-2455
In stock
NSN: 5331-01-476-2455
FSC Code: 5331
MPN: AS568920AS3209

5331-01-503-9910 (61-8665)

NIIN: 01-503-9910
In stock
NSN: 5331-01-503-9910
FSC Code: 5331
MPN: 618665

5331-01-476-2415 (AS568-155)

NIIN: 01-476-2415
In stock
NSN: 5331-01-476-2415
FSC Code: 5331
MPN: AS568155

5331-01-168-5501 (BDS3130-015-A12)

NIIN: 01-168-5501
In stock
NSN: 5331-01-168-5501
FSC Code: 5331
MPN: BDS3130015A12

5331-01-126-0837 (BDS3115-130DH/3)

NIIN: 01-126-0837
In stock
NSN: 5331-01-126-0837
FSC Code: 5331
MPN: BDS3115130DH3

5331-01-341-2127 (ARP568-008V8)

NIIN: 01-341-2127
In stock
NSN: 5331-01-341-2127
FSC Code: 5331
MPN: ARP568008V8

5331-01-168-5500 (BDS3130-009-A12)

NIIN: 01-168-5500
In stock
NSN: 5331-01-168-5500
FSC Code: 5331
MPN: BDS3130009A12

5331-01-503-9913 (61-8103)

NIIN: 01-503-9913
In stock
NSN: 5331-01-503-9913
FSC Code: 5331
MPN: 618103

5331-01-127-6941 (BDS3115-113DH/2)

NIIN: 01-127-6941
In stock
NSN: 5331-01-127-6941
FSC Code: 5331
MPN: BDS3115113DH2

5331-01-129-9672 (BDS3115-010CH/3)

NIIN: 01-129-9672
In stock
NSN: 5331-01-129-9672
FSC Code: 5331
MPN: BDS3115010CH3