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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.

5331-01-380-2644 (154-3511)

NIIN: 01-380-2644
In stock
NSN: 5331-01-380-2644
FSC Code: 5331
MPN: 1543511

5331-17-103-9944 (1542198-5)

NIIN: 17-103-9944
In stock
NSN: 5331-17-103-9944
FSC Code: 5331
MPN: 15421985

5331-00-505-5085 (4444600PC47)

NIIN: 00-505-5085
In stock
NSN: 5331-00-505-5085
FSC Code: 5331
MPN: 4444600PC47

5331-01-408-2250 (1540-16)

NIIN: 01-408-2250
In stock
NSN: 5331-01-408-2250
FSC Code: 5331
MPN: 154016

5331-01-134-0613 (4437-4)

NIIN: 01-134-0613
In stock
NSN: 5331-01-134-0613
FSC Code: 5331
MPN: 44374

5331-01-257-7725 (443386C1)

NIIN: 01-257-7725
In stock
NSN: 5331-01-257-7725
FSC Code: 5331
MPN: 443386C1

5331-01-468-3534 (26-2608-15)

NIIN: 01-468-3534
In stock
NSN: 5331-01-468-3534
FSC Code: 5331
MPN: 26260815

5331-01-468-3529 (26-2608-25)

NIIN: 01-468-3529
In stock
NSN: 5331-01-468-3529
FSC Code: 5331
MPN: 26260825

5331-01-273-9930 (4-4309-10)

NIIN: 01-273-9930
In stock
NSN: 5331-01-273-9930
FSC Code: 5331
MPN: 4430910

5331-01-508-2773 (153-4907)

NIIN: 01-508-2773
In stock
NSN: 5331-01-508-2773
FSC Code: 5331
MPN: 1534907

5331-01-507-7916 (153-4906)

NIIN: 01-507-7916
In stock
NSN: 5331-01-507-7916
FSC Code: 5331
MPN: 1534906

5331-01-355-5151 (1534-12-05)

NIIN: 01-355-5151
In stock
NSN: 5331-01-355-5151
FSC Code: 5331
MPN: 15341205

5331-99-614-5188 (1533S014)

NIIN: 99-614-5188
In stock
NSN: 5331-99-614-5188
FSC Code: 5331
MPN: 1533S014

5331-01-441-1761 (15-3200-52)

NIIN: 01-441-1761
In stock
NSN: 5331-01-441-1761
FSC Code: 5331
MPN: 15320052

5331-01-413-1693 (1531758-24)

NIIN: 01-413-1693
In stock
NSN: 5331-01-413-1693
FSC Code: 5331
MPN: 153175824

5331-01-374-5371 (1530S155)

NIIN: 01-374-5371
In stock
NSN: 5331-01-374-5371
FSC Code: 5331
MPN: 1530S155

5331-01-550-9025 (153-066)

NIIN: 01-550-9025
In stock
NSN: 5331-01-550-9025
FSC Code: 5331
MPN: 153066

5331-01-550-9027 (153-067)

NIIN: 01-550-9027
In stock
NSN: 5331-01-550-9027
FSC Code: 5331
MPN: 153067

5331-01-420-6073 (15-3-0400-15)

NIIN: 01-420-6073
In stock
NSN: 5331-01-420-6073
FSC Code: 5331
MPN: 153040015

5331-01-528-5824 (1530-4X4X10-73)

NIIN: 01-528-5824
In stock
NSN: 5331-01-528-5824
FSC Code: 5331
MPN: 15304X4X1073

5331-01-206-3202 (4423R1-6B)

NIIN: 01-206-3202
In stock
NSN: 5331-01-206-3202
FSC Code: 5331
MPN: 4423R16B

5331-01-212-6155 (442-2347)

NIIN: 01-212-6155
In stock
NSN: 5331-01-212-6155
FSC Code: 5331
MPN: 4422347

5331-01-260-8955 (4420961-0110)

NIIN: 01-260-8955
In stock
NSN: 5331-01-260-8955
FSC Code: 5331
MPN: 44209610110

5331-00-492-0359 (4420171-0231)

NIIN: 00-492-0359
In stock
NSN: 5331-00-492-0359
FSC Code: 5331
MPN: 44201710231

5331-01-543-2121 (153-003-E-052ITEM185)

NIIN: 01-543-2121
In stock
NSN: 5331-01-543-2121
FSC Code: 5331
MPN: 153003E052ITEM185

5331-00-728-3269 (44-1969)

NIIN: 00-728-3269
In stock
NSN: 5331-00-728-3269
FSC Code: 5331
MPN: 441969

5331-00-728-3268 (44-1971)

NIIN: 00-728-3268
In stock
NSN: 5331-00-728-3268
FSC Code: 5331
MPN: 441971

5331-00-728-2680 (44-1968)

NIIN: 00-728-2680
In stock
NSN: 5331-00-728-2680
FSC Code: 5331
MPN: 441968

5331-00-828-5532 (44-1839)

NIIN: 00-828-5532
In stock
NSN: 5331-00-828-5532
FSC Code: 5331
MPN: 441839

5331-00-828-5537 (44-1818)

NIIN: 00-828-5537
In stock
NSN: 5331-00-828-5537
FSC Code: 5331
MPN: 441818

5331-01-265-1206 (4-418018-00)

NIIN: 01-265-1206
In stock
NSN: 5331-01-265-1206
FSC Code: 5331
MPN: 441801800

5331-01-236-1736 (44-153-03)

NIIN: 01-236-1736
In stock
NSN: 5331-01-236-1736
FSC Code: 5331
MPN: 4415303

5331-01-115-8727 (4415172-912)

NIIN: 01-115-8727
In stock
NSN: 5331-01-115-8727
FSC Code: 5331
MPN: 4415172912

5331-00-921-3606 (44-1459)

NIIN: 00-921-3606
In stock
NSN: 5331-00-921-3606
FSC Code: 5331
MPN: 441459

5331-01-134-0614 (44-1458)

NIIN: 01-134-0614
In stock
NSN: 5331-01-134-0614
FSC Code: 5331
MPN: 441458

5331-00-942-0011 (44-1308-011)

NIIN: 00-942-0011
In stock
NSN: 5331-00-942-0011
FSC Code: 5331
MPN: 441308011

5331-01-374-4410 (1526S025)

NIIN: 01-374-4410
In stock
NSN: 5331-01-374-4410
FSC Code: 5331
MPN: 1526S025

5331-01-416-5303 (152-507)

NIIN: 01-416-5303
In stock
NSN: 5331-01-416-5303
FSC Code: 5331
MPN: 152507

5331-01-274-3035 (4410961-9060)

NIIN: 01-274-3035
In stock
NSN: 5331-01-274-3035
FSC Code: 5331
MPN: 44109619060

5331-00-090-3882 (4410951-9060)

NIIN: 00-090-3882
In stock
NSN: 5331-00-090-3882
FSC Code: 5331
MPN: 44109519060

5331-00-585-8486 (4410871-9060)

NIIN: 00-585-8486
In stock
NSN: 5331-00-585-8486
FSC Code: 5331
MPN: 44108719060

5331-01-320-2368 (4410772-9206)

NIIN: 01-320-2368
In stock
NSN: 5331-01-320-2368
FSC Code: 5331
MPN: 44107729206

5331-00-043-1860 (4410661-9100)

NIIN: 00-043-1860
In stock
NSN: 5331-00-043-1860
FSC Code: 5331
MPN: 44106619100

5331-00-087-8823 (441071-0040)

NIIN: 00-087-8823
In stock
NSN: 5331-00-087-8823
FSC Code: 5331
MPN: 4410710040

5331-00-571-9040 (4410591-9080)

NIIN: 00-571-9040
In stock
NSN: 5331-00-571-9040
FSC Code: 5331
MPN: 44105919080

5331-01-441-1772 (15-2390-52)

NIIN: 01-441-1772
In stock
NSN: 5331-01-441-1772
FSC Code: 5331
MPN: 15239052

5331-01-505-6039 (152-3968)

NIIN: 01-505-6039
In stock
NSN: 5331-01-505-6039
FSC Code: 5331
MPN: 1523968

5331-01-472-8855 (3-904N604-70)

NIIN: 01-472-8855
In stock
NSN: 5331-01-472-8855
FSC Code: 5331
MPN: 3904N60470