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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.

5331-01-326-8400 (5820533-007)

NIIN: 01-326-8400
In stock
NSN: 5331-01-326-8400
FSC Code: 5331
MPN: 5820533007

5331-01-331-1599 (5820533-008)

NIIN: 01-331-1599
In stock
NSN: 5331-01-331-1599
FSC Code: 5331
MPN: 5820533008

5331-01-326-8398 (5820533-005)

NIIN: 01-326-8398
In stock
NSN: 5331-01-326-8398
FSC Code: 5331
MPN: 5820533005

5331-12-314-3476 (700429020000.MTU)

NIIN: 12-314-3476
In stock
NSN: 5331-12-314-3476
FSC Code: 5331
MPN: 700429020000MTU

5331-01-012-6218 (581R130H16)

NIIN: 01-012-6218
In stock
NSN: 5331-01-012-6218
FSC Code: 5331
MPN: 581R130H16

5331-01-043-5824 (581R130H19)

NIIN: 01-043-5824
In stock
NSN: 5331-01-043-5824
FSC Code: 5331
MPN: 581R130H19

5331-01-013-8332 (581R130H17)

NIIN: 01-013-8332
In stock
NSN: 5331-01-013-8332
FSC Code: 5331
MPN: 581R130H17

5331-01-012-6217 (581R130H13)

NIIN: 01-012-6217
In stock
NSN: 5331-01-012-6217
FSC Code: 5331
MPN: 581R130H13

5331-01-044-1604 (581R130H18)

NIIN: 01-044-1604
In stock
NSN: 5331-01-044-1604
FSC Code: 5331
MPN: 581R130H18

5331-01-088-3431 (581R130H08)

NIIN: 01-088-3431
In stock
NSN: 5331-01-088-3431
FSC Code: 5331
MPN: 581R130H08

5331-01-078-5117 (581R130H15)

NIIN: 01-078-5117
In stock
NSN: 5331-01-078-5117
FSC Code: 5331
MPN: 581R130H15

5331-01-013-5050 (581R130H14)

NIIN: 01-013-5050
In stock
NSN: 5331-01-013-5050
FSC Code: 5331
MPN: 581R130H14

5331-01-012-6215 (581R130H10)

NIIN: 01-012-6215
In stock
NSN: 5331-01-012-6215
FSC Code: 5331
MPN: 581R130H10

5331-01-013-4435 (581R130H11)

NIIN: 01-013-4435
In stock
NSN: 5331-01-013-4435
FSC Code: 5331
MPN: 581R130H11

5331-01-012-6216 (581R130H12)

NIIN: 01-012-6216
In stock
NSN: 5331-01-012-6216
FSC Code: 5331
MPN: 581R130H12

5331-01-017-5881 (581R130H09)

NIIN: 01-017-5881
In stock
NSN: 5331-01-017-5881
FSC Code: 5331
MPN: 581R130H09

5331-01-013-5049 (581R130H07)

NIIN: 01-013-5049
In stock
NSN: 5331-01-013-5049
FSC Code: 5331
MPN: 581R130H07

5331-00-109-7448 (5-819S455-7)

NIIN: 00-109-7448
In stock
NSN: 5331-00-109-7448
FSC Code: 5331
MPN: 5819S4557

5331-01-447-9663 (20J0771)

NIIN: 01-447-9663
In stock
NSN: 5331-01-447-9663
FSC Code: 5331
MPN: 20J0771

5331-01-447-9661 (20J3041)

NIIN: 01-447-9661
In stock
NSN: 5331-01-447-9661
FSC Code: 5331
MPN: 20J3041

5331-01-447-9669 (PL1-39-76.0)

NIIN: 01-447-9669
In stock
NSN: 5331-01-447-9669
FSC Code: 5331
MPN: PL139760

5331-01-570-6559 (20J0990)

NIIN: 01-570-6559
In stock
NSN: 5331-01-570-6559
FSC Code: 5331
MPN: 20J0990

5331-00-211-8040 (5-818)

NIIN: 00-211-8040
In stock
NSN: 5331-00-211-8040
FSC Code: 5331
MPN: 5818

5331-00-531-4795 (58171K109)

NIIN: 00-531-4795
In stock
NSN: 5331-00-531-4795
FSC Code: 5331
MPN: 58171K109

5331-01-345-0057 (20C-0064-0007)

NIIN: 01-345-0057
In stock
NSN: 5331-01-345-0057
FSC Code: 5331
MPN: 20C00640007

5331-01-345-0056 (20C-0064-0006)

NIIN: 01-345-0056
In stock
NSN: 5331-01-345-0056
FSC Code: 5331
MPN: 20C00640006

5331-01-345-0054 (20C-0061-0024)

NIIN: 01-345-0054
In stock
NSN: 5331-01-345-0054
FSC Code: 5331
MPN: 20C00610024

5331-01-345-0053 (20C-0061-0005)

NIIN: 01-345-0053
In stock
NSN: 5331-01-345-0053
FSC Code: 5331
MPN: 20C00610005

5331-01-345-0055 (20C-0064-0005)

NIIN: 01-345-0055
In stock
NSN: 5331-01-345-0055
FSC Code: 5331
MPN: 20C00640005

5331-01-351-7613 (20C-0061-0023)

NIIN: 01-351-7613
In stock
NSN: 5331-01-351-7613
FSC Code: 5331
MPN: 20C00610023

5331-01-078-0854 (5-815V747-75)

NIIN: 01-078-0854
In stock
NSN: 5331-01-078-0854
FSC Code: 5331
MPN: 5815V74775

5331-01-077-8508 (58-14-98)

NIIN: 01-077-8508
In stock
NSN: 5331-01-077-8508
FSC Code: 5331
MPN: 581498

5331-01-157-3294 (58-14-24)

NIIN: 01-157-3294
In stock
NSN: 5331-01-157-3294
FSC Code: 5331
MPN: 581424

5331-00-853-4200 (58-139)

NIIN: 00-853-4200
In stock
NSN: 5331-00-853-4200
FSC Code: 5331
MPN: 58139

5331-01-497-0559 (PL14590N18-456B)

NIIN: 01-497-0559
In stock
NSN: 5331-01-497-0559
FSC Code: 5331
MPN: PL14590N18456B

5331-01-476-7838 (PL14006N18ITEM456C)

NIIN: 01-476-7838
In stock
NSN: 5331-01-476-7838
FSC Code: 5331
MPN: PL14006N18ITEM456C

5331-01-458-5482 (20A11CM249)

NIIN: 01-458-5482
In stock
NSN: 5331-01-458-5482
FSC Code: 5331
MPN: 20A11CM249

5331-01-508-9591 (PL-11830F-18)

NIIN: 01-508-9591
In stock
NSN: 5331-01-508-9591
FSC Code: 5331
MPN: PL11830F18

5331-01-376-9654 (20A11-X-MS1015)

NIIN: 01-376-9654
In stock
NSN: 5331-01-376-9654
FSC Code: 5331
MPN: 20A11XMS1015

5331-01-377-2775 (20A11XM239)

NIIN: 01-377-2775
In stock
NSN: 5331-01-377-2775
FSC Code: 5331
MPN: 20A11XM239

5331-01-377-5185 (20A11XM459)

NIIN: 01-377-5185
In stock
NSN: 5331-01-377-5185
FSC Code: 5331
MPN: 20A11XM459

5331-01-476-7690 (PL14006N18ITEM456D)

NIIN: 01-476-7690
In stock
NSN: 5331-01-476-7690
FSC Code: 5331
MPN: PL14006N18ITEM456D

5331-01-389-0060 (20A11EM231)

NIIN: 01-389-0060
In stock
NSN: 5331-01-389-0060
FSC Code: 5331
MPN: 20A11EM231

5331-01-497-0564 (PL14590N18-456D)

NIIN: 01-497-0564
In stock
NSN: 5331-01-497-0564
FSC Code: 5331
MPN: PL14590N18456D

5331-01-497-0561 (PL14590N18-456C)

NIIN: 01-497-0561
In stock
NSN: 5331-01-497-0561
FSC Code: 5331
MPN: PL14590N18456C

5331-01-476-7682 (PL14006N18ITEM456F)

NIIN: 01-476-7682
In stock
NSN: 5331-01-476-7682
FSC Code: 5331
MPN: PL14006N18ITEM456F

5331-01-476-7678 (PL14006N18ITEM456B)

NIIN: 01-476-7678
In stock
NSN: 5331-01-476-7678
FSC Code: 5331
MPN: PL14006N18ITEM456B

5331-01-481-8071 (20A11-EP-M231)

NIIN: 01-481-8071
In stock
NSN: 5331-01-481-8071
FSC Code: 5331
MPN: 20A11EPM231