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.

5331-01-500-2619 (21049873-101)

NIIN: 01-500-2619
In stock
NSN: 5331-01-500-2619
FSC Code: 5331
MPN: 21049873101

5331-01-399-5490 (21049308-101)

NIIN: 01-399-5490
In stock
NSN: 5331-01-399-5490
FSC Code: 5331
MPN: 21049308101

5331-01-399-4631 (3313-AS-308-2)

NIIN: 01-399-4631
In stock
NSN: 5331-01-399-4631
FSC Code: 5331
MPN: 3313AS3082

5331-01-500-2626 (21049873-103)

NIIN: 01-500-2626
In stock
NSN: 5331-01-500-2626
FSC Code: 5331
MPN: 21049873103

5331-01-438-2643 (3313-AS-308-1)

NIIN: 01-438-2643
In stock
NSN: 5331-01-438-2643
FSC Code: 5331
MPN: 3313AS3081

5331-01-500-2627 (21049873-102)

NIIN: 01-500-2627
In stock
NSN: 5331-01-500-2627
FSC Code: 5331
MPN: 21049873102

5331-01-500-2616 (21047535-101)

NIIN: 01-500-2616
In stock
NSN: 5331-01-500-2616
FSC Code: 5331
MPN: 21047535101

5331-01-361-5425 (SAE-AS83461/1)

NIIN: 01-361-5425
In stock
NSN: 5331-01-361-5425
FSC Code: 5331
MPN: SAEAS834611

5331-01-332-7118 (583-507-9003)

NIIN: 01-332-7118
In stock
NSN: 5331-01-332-7118
FSC Code: 5331
MPN: 5835079003

5331-01-077-3824 (58-34-90)

NIIN: 01-077-3824
In stock
NSN: 5331-01-077-3824
FSC Code: 5331
MPN: 583490

5331-01-077-3012 (58-34-86)

NIIN: 01-077-3012
In stock
NSN: 5331-01-077-3012
FSC Code: 5331
MPN: 583486

5331-01-077-4685 (58-34-91)

NIIN: 01-077-4685
In stock
NSN: 5331-01-077-4685
FSC Code: 5331
MPN: 583491

5331-01-077-0961 (58-34-87)

NIIN: 01-077-0961
In stock
NSN: 5331-01-077-0961
FSC Code: 5331
MPN: 583487

5331-01-077-3010 (58-34-72)

NIIN: 01-077-3010
In stock
NSN: 5331-01-077-3010
FSC Code: 5331
MPN: 583472

5331-01-076-6162 (58-34-75)

NIIN: 01-076-6162
In stock
NSN: 5331-01-076-6162
FSC Code: 5331
MPN: 583475

5331-01-077-3009 (58-34-58)

NIIN: 01-077-3009
In stock
NSN: 5331-01-077-3009
FSC Code: 5331
MPN: 583458

5331-01-084-4566 (58-34-56)

NIIN: 01-084-4566
In stock
NSN: 5331-01-084-4566
FSC Code: 5331
MPN: 583456

5331-00-988-0450 (58-34-54)

NIIN: 00-988-0450
In stock
NSN: 5331-00-988-0450
FSC Code: 5331
MPN: 583454

5331-01-287-4831 (58330-45)

NIIN: 01-287-4831
In stock
NSN: 5331-01-287-4831
FSC Code: 5331
MPN: 5833045

5331-01-014-4289 (58330-14)

NIIN: 01-014-4289
In stock
NSN: 5331-01-014-4289
FSC Code: 5331
MPN: 5833014

5331-00-171-5611 (58316K3)

NIIN: 00-171-5611
In stock
NSN: 5331-00-171-5611
FSC Code: 5331
MPN: 58316K3

5331-01-234-6375 (58313-40146-1)

NIIN: 01-234-6375
In stock
NSN: 5331-01-234-6375
FSC Code: 5331
MPN: 58313401461

5331-01-247-2767 (5829212-8)

NIIN: 01-247-2767
In stock
NSN: 5331-01-247-2767
FSC Code: 5331
MPN: 58292128

5331-01-247-0602 (5829212-3)

NIIN: 01-247-0602
In stock
NSN: 5331-01-247-0602
FSC Code: 5331
MPN: 58292123

5331-01-247-0604 (5829212-5)

NIIN: 01-247-0604
In stock
NSN: 5331-01-247-0604
FSC Code: 5331
MPN: 58292125

5331-01-247-2768 (5829212-7)

NIIN: 01-247-2768
In stock
NSN: 5331-01-247-2768
FSC Code: 5331
MPN: 58292127

5331-01-247-0601 (5829212-2)

NIIN: 01-247-0601
In stock
NSN: 5331-01-247-0601
FSC Code: 5331
MPN: 58292122

5331-01-247-0603 (5829212-4)

NIIN: 01-247-0603
In stock
NSN: 5331-01-247-0603
FSC Code: 5331
MPN: 58292124

5331-01-247-2690 (5829212-6)

NIIN: 01-247-2690
In stock
NSN: 5331-01-247-2690
FSC Code: 5331
MPN: 58292126

5331-01-247-0605 (5829212-1)

NIIN: 01-247-0605
In stock
NSN: 5331-01-247-0605
FSC Code: 5331
MPN: 58292121

5331-01-288-7156 (58280-TAB)

NIIN: 01-288-7156
In stock
NSN: 5331-01-288-7156
FSC Code: 5331
MPN: 58280TAB

5331-01-300-0367 (582569C1)

NIIN: 01-300-0367
In stock
NSN: 5331-01-300-0367
FSC Code: 5331
MPN: 582569C1

5331-01-308-0098 (582568C1)

NIIN: 01-308-0098
In stock
NSN: 5331-01-308-0098
FSC Code: 5331
MPN: 582568C1

5331-01-053-2906 (582554-1)

NIIN: 01-053-2906
In stock
NSN: 5331-01-053-2906
FSC Code: 5331
MPN: 5825541

5331-01-315-8741 (582516C1)

NIIN: 01-315-8741
In stock
NSN: 5331-01-315-8741
FSC Code: 5331
MPN: 582516C1

5331-01-316-1326 (582494C1)

NIIN: 01-316-1326
In stock
NSN: 5331-01-316-1326
FSC Code: 5331
MPN: 582494C1

5331-01-420-7068 (K73A0012-6)

NIIN: 01-420-7068
In stock
NSN: 5331-01-420-7068
FSC Code: 5331
MPN: K73A00126

5331-01-327-2624 (582-507-9003)

NIIN: 01-327-2624
In stock
NSN: 5331-01-327-2624
FSC Code: 5331
MPN: 5825079003

5331-01-316-1327 (582491C1)

NIIN: 01-316-1327
In stock
NSN: 5331-01-316-1327
FSC Code: 5331
MPN: 582491C1

5331-01-315-2129 (582492C1)

NIIN: 01-315-2129
In stock
NSN: 5331-01-315-2129
FSC Code: 5331
MPN: 582492C1

5331-01-077-3008 (58-24-84)

NIIN: 01-077-3008
In stock
NSN: 5331-01-077-3008
FSC Code: 5331
MPN: 582484

5331-00-152-2739 (582403-11)

NIIN: 00-152-2739
In stock
NSN: 5331-00-152-2739
FSC Code: 5331
MPN: 58240311

5331-01-326-8399 (5820533-006)

NIIN: 01-326-8399
In stock
NSN: 5331-01-326-8399
FSC Code: 5331
MPN: 5820533006

5331-01-326-8396 (5820533-010)

NIIN: 01-326-8396
In stock
NSN: 5331-01-326-8396
FSC Code: 5331
MPN: 5820533010

5331-01-326-8402 (5820533-011)

NIIN: 01-326-8402
In stock
NSN: 5331-01-326-8402
FSC Code: 5331
MPN: 5820533011

5331-01-326-8397 (5820533-013)

NIIN: 01-326-8397
In stock
NSN: 5331-01-326-8397
FSC Code: 5331
MPN: 5820533013

5331-01-327-7885 (5820533-003)

NIIN: 01-327-7885
In stock
NSN: 5331-01-327-7885
FSC Code: 5331
MPN: 5820533003

5331-01-326-8401 (5820533-002)

NIIN: 01-326-8401
In stock
NSN: 5331-01-326-8401
FSC Code: 5331
MPN: 5820533002