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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.

5331-00-464-8516 (5-502N406-6)

NIIN: 00-464-8516
In stock
NSN: 5331-00-464-8516
FSC Code: 5331
MPN: 5502N4066

5331-01-172-6393 (55-024-8307)

NIIN: 01-172-6393
In stock
NSN: 5331-01-172-6393
FSC Code: 5331
MPN: 550248307

5331-01-045-2939 (55-018-004)

NIIN: 01-045-2939
In stock
NSN: 5331-01-045-2939
FSC Code: 5331
MPN: 55018004

5331-01-172-1866 (55-013-8309)

NIIN: 01-172-1866
In stock
NSN: 5331-01-172-1866
FSC Code: 5331
MPN: 550138309

5331-01-376-0687 (202-00-401)

NIIN: 01-376-0687
In stock
NSN: 5331-01-376-0687
FSC Code: 5331
MPN: 20200401

5331-00-025-4025 (5500W10P019)

NIIN: 00-025-4025
In stock
NSN: 5331-00-025-4025
FSC Code: 5331
MPN: 5500W10P019

5331-01-183-6995 (5500W10P092)

NIIN: 01-183-6995
In stock
NSN: 5331-01-183-6995
FSC Code: 5331
MPN: 5500W10P092

5331-01-330-2091 (5500W10P084)

NIIN: 01-330-2091
In stock
NSN: 5331-01-330-2091
FSC Code: 5331
MPN: 5500W10P084

5331-01-330-2090 (5500W10P083)

NIIN: 01-330-2090
In stock
NSN: 5331-01-330-2090
FSC Code: 5331
MPN: 5500W10P083

5331-01-166-1582 (5500W10P075)

NIIN: 01-166-1582
In stock
NSN: 5331-01-166-1582
FSC Code: 5331
MPN: 5500W10P075

5331-01-491-4479 (23247--03423)

NIIN: 01-491-4479
In stock
NSN: 5331-01-491-4479
FSC Code: 5331
MPN: 2324703423

5331-01-467-0669 (AMS-R-83485/1)

NIIN: 01-467-0669
In stock
NSN: 5331-01-467-0669
FSC Code: 5331
MPN: AMSR834851

5331-01-308-1199 (55-007)

NIIN: 01-308-1199
In stock
NSN: 5331-01-308-1199
FSC Code: 5331
MPN: 55007

5331-01-186-7538 (550-0112-122)

NIIN: 01-186-7538
In stock
NSN: 5331-01-186-7538
FSC Code: 5331
MPN: 5500112122

5331-01-541-9982 (2-019S604-70)

NIIN: 01-541-9982
In stock
NSN: 5331-01-541-9982
FSC Code: 5331
MPN: 2019S60470

5331-01-494-0479 (2-019L1120-70)

NIIN: 01-494-0479
In stock
NSN: 5331-01-494-0479
FSC Code: 5331
MPN: 2019L112070

5331-01-457-9317 (201-A-1IN-PC14)

NIIN: 01-457-9317
In stock
NSN: 5331-01-457-9317
FSC Code: 5331
MPN: 201A1INPC14

5331-01-344-3816 (201-927-216-730-000)

NIIN: 01-344-3816
In stock
NSN: 5331-01-344-3816
FSC Code: 5331
MPN: 201927216730000

5331-01-344-3817 (201-927-220-730-000)

NIIN: 01-344-3817
In stock
NSN: 5331-01-344-3817
FSC Code: 5331
MPN: 201927220730000

5331-01-546-2016 (2-018S613-60)

NIIN: 01-546-2016
In stock
NSN: 5331-01-546-2016
FSC Code: 5331
MPN: 2018S61360

5331-01-549-4503 (2018N-9)

NIIN: 01-549-4503
In stock
NSN: 5331-01-549-4503
FSC Code: 5331
MPN: 2018N9

5331-01-412-9856 (2-018N90)

NIIN: 01-412-9856
In stock
NSN: 5331-01-412-9856
FSC Code: 5331
MPN: 2018N90

5331-01-507-0285 (2-019)

NIIN: 01-507-0285
In stock
NSN: 5331-01-507-0285
FSC Code: 5331
MPN: 2019

5331-01-571-7358 (2-018N0756)

NIIN: 01-571-7358
In stock
NSN: 5331-01-571-7358
FSC Code: 5331
MPN: 2018N0756

5331-99-209-2257 (BS1806-112)

NIIN: 99-209-2257
In stock
NSN: 5331-99-209-2257
FSC Code: 5331
MPN: BS1806112

5331-01-382-7552 (2-018)

NIIN: 01-382-7552
In stock
NSN: 5331-01-382-7552
FSC Code: 5331
MPN: 2018

5331-01-561-7406 (2-018)

NIIN: 01-561-7406
In stock
NSN: 5331-01-561-7406
FSC Code: 5331
MPN: 2018

5331-01-464-1122 (N0552-2-017)

NIIN: 01-464-1122
In stock
NSN: 5331-01-464-1122
FSC Code: 5331
MPN: N05522017

5331-01-546-8028 (721-7550092-12)

NIIN: 01-546-8028
In stock
NSN: 5331-01-546-8028
FSC Code: 5331
MPN: 721755009212

5331-20-002-7996 (20-1752-99-01-02)

NIIN: 20-002-7996
In stock
NSN: 5331-20-002-7996
FSC Code: 5331
MPN: 201752990102

5331-01-470-6703 (A06689.233.142)

NIIN: 01-470-6703
In stock
NSN: 5331-01-470-6703
FSC Code: 5331
MPN: A06689233142

5331-01-272-0641 (54-E-104)

NIIN: 01-272-0641
In stock
NSN: 5331-01-272-0641
FSC Code: 5331
MPN: 54E104

5331-01-556-1932 (2-0171120-70)

NIIN: 01-556-1932
In stock
NSN: 5331-01-556-1932
FSC Code: 5331
MPN: 2017112070

5331-01-434-0539 (2-017)

NIIN: 01-434-0539
In stock
NSN: 5331-01-434-0539
FSC Code: 5331
MPN: 2017

5331-01-571-5900 (2-016N0756)

NIIN: 01-571-5900
In stock
NSN: 5331-01-571-5900
FSC Code: 5331
MPN: 2016N0756

5331-01-498-9532 (2-016V1226-75)

NIIN: 01-498-9532
In stock
NSN: 5331-01-498-9532
FSC Code: 5331
MPN: 2016V122675

5331-01-355-9911 (8023N7013)

NIIN: 01-355-9911
In stock
NSN: 5331-01-355-9911
FSC Code: 5331
MPN: 8023N7013

5331-01-495-5545 (2-016TEFLON)

NIIN: 01-495-5545
In stock
NSN: 5331-01-495-5545
FSC Code: 5331
MPN: 2016TEFLON

5331-01-358-1578 (ARP568-016E515-)

NIIN: 01-358-1578
In stock
NSN: 5331-01-358-1578
FSC Code: 5331
MPN: ARP568016E515

5331-00-847-3562 (54A125-431)

NIIN: 00-847-3562
In stock
NSN: 5331-00-847-3562
FSC Code: 5331
MPN: 54A125431

5331-01-429-0416 (2-015-L946-60)

NIIN: 01-429-0416
In stock
NSN: 5331-01-429-0416
FSC Code: 5331
MPN: 2015L94660

5331-01-476-0050 (22610-16)

NIIN: 01-476-0050
In stock
NSN: 5331-01-476-0050
FSC Code: 5331
MPN: 2261016

5331-01-541-0786 (4KP968)

NIIN: 01-541-0786
In stock
NSN: 5331-01-541-0786
FSC Code: 5331
MPN: 4KP968

5331-01-201-0163 (549F0R525-SN-1)

NIIN: 01-201-0163
In stock
NSN: 5331-01-201-0163
FSC Code: 5331
MPN: 549F0R525SN1

5331-01-548-9028 (2-015F953-70)

NIIN: 01-548-9028
In stock
NSN: 5331-01-548-9028
FSC Code: 5331
MPN: 2015F95370

5331-01-530-8246 (2-015N0552-90)

NIIN: 01-530-8246
In stock
NSN: 5331-01-530-8246
FSC Code: 5331
MPN: 2015N055290

5331-01-439-6471 (2015N-9)

NIIN: 01-439-6471
In stock
NSN: 5331-01-439-6471
FSC Code: 5331
MPN: 2015N9

5331-01-561-7219 (2-015-N0602-70)

NIIN: 01-561-7219
In stock
NSN: 5331-01-561-7219
FSC Code: 5331
MPN: 2015N060270