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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.

5331-00-520-2835 (4G53855-101A)

NIIN: 00-520-2835
In stock
NSN: 5331-00-520-2835
FSC Code: 5331
MPN: 4G53855101A

5331-01-422-3027 (2-033V747-75)

NIIN: 01-422-3027
In stock
NSN: 5331-01-422-3027
FSC Code: 5331
MPN: 2033V74775

5331-00-599-2127 (4G0SK13E)

NIIN: 00-599-2127
In stock
NSN: 5331-00-599-2127
FSC Code: 5331
MPN: 4G0SK13E

5331-00-318-3332 (4FSN62)

NIIN: 00-318-3332
In stock
NSN: 5331-00-318-3332
FSC Code: 5331
MPN: 4FSN62

5331-00-290-8769 (4F7388)

NIIN: 00-290-8769
In stock
NSN: 5331-00-290-8769
FSC Code: 5331
MPN: 4F7388

5331-00-691-9950 (4F-7390)

NIIN: 00-691-9950
In stock
NSN: 5331-00-691-9950
FSC Code: 5331
MPN: 4F7390

5331-00-828-9793 (4F5675)

NIIN: 00-828-9793
In stock
NSN: 5331-00-828-9793
FSC Code: 5331
MPN: 4F5675

5331-00-171-8016 (4F5676)

NIIN: 00-171-8016
In stock
NSN: 5331-00-171-8016
FSC Code: 5331
MPN: 4F5676

5331-00-514-4048 (4F3408)

NIIN: 00-514-4048
In stock
NSN: 5331-00-514-4048
FSC Code: 5331
MPN: 4F3408

5331-00-132-1677 (4F51148-101A)

NIIN: 00-132-1677
In stock
NSN: 5331-00-132-1677
FSC Code: 5331
MPN: 4F51148101A

5331-00-599-0413 (4F3737)

NIIN: 00-599-0413
In stock
NSN: 5331-00-599-0413
FSC Code: 5331
MPN: 4F3737

5331-00-291-9570 (4F2411)

NIIN: 00-291-9570
In stock
NSN: 5331-00-291-9570
FSC Code: 5331
MPN: 4F2411

5331-00-426-5050 (4F2709)

NIIN: 00-426-5050
In stock
NSN: 5331-00-426-5050
FSC Code: 5331
MPN: 4F2709

5331-00-352-7703 (4F2410)

NIIN: 00-352-7703
In stock
NSN: 5331-00-352-7703
FSC Code: 5331
MPN: 4F2410

5331-00-292-1455 (4F1466)

NIIN: 00-292-1455
In stock
NSN: 5331-00-292-1455
FSC Code: 5331
MPN: 4F1466

5331-00-400-8940 (4F12357-103A)

NIIN: 00-400-8940
In stock
NSN: 5331-00-400-8940
FSC Code: 5331
MPN: 4F12357103A

5331-00-542-1013 (4DP2079-1APC16X3-4)

NIIN: 00-542-1013
In stock
NSN: 5331-00-542-1013
FSC Code: 5331
MPN: 4DP20791APC16X34

5331-01-203-2991 (4DP-2035)

NIIN: 01-203-2991
In stock
NSN: 5331-01-203-2991
FSC Code: 5331
MPN: 4DP2035

5331-01-060-0351 (4D5256)

NIIN: 01-060-0351
In stock
NSN: 5331-01-060-0351
FSC Code: 5331
MPN: 4D5256

5331-01-564-0763 (N0702-90)

NIIN: 01-564-0763
In stock
NSN: 5331-01-564-0763
FSC Code: 5331
MPN: N070290

5331-01-290-6098 (4-B8076P)

NIIN: 01-290-6098
In stock
NSN: 5331-01-290-6098
FSC Code: 5331
MPN: 4B8076P

5331-01-308-5845 (4A-VITON)

NIIN: 01-308-5845
In stock
NSN: 5331-01-308-5845
FSC Code: 5331
MPN: 4AVITON

5331-01-154-9450 (4A91)

NIIN: 01-154-9450
In stock
NSN: 5331-01-154-9450
FSC Code: 5331
MPN: 4A91

5331-01-414-8473 (16P00100-0388)

NIIN: 01-414-8473
In stock
NSN: 5331-01-414-8473
FSC Code: 5331
MPN: 16P001000388

5331-01-154-9449 (4A75)

NIIN: 01-154-9449
In stock
NSN: 5331-01-154-9449
FSC Code: 5331
MPN: 4A75

5331-01-154-9448 (4A47)

NIIN: 01-154-9448
In stock
NSN: 5331-01-154-9448
FSC Code: 5331
MPN: 4A47

5331-01-251-2935 (4A-214)

NIIN: 01-251-2935
In stock
NSN: 5331-01-251-2935
FSC Code: 5331
MPN: 4A214

5331-01-518-7429 (29530491)

NIIN: 01-518-7429
In stock
NSN: 5331-01-518-7429
FSC Code: 5331
MPN: 29530491

5331-01-479-0630 (2-025N0552)

NIIN: 01-479-0630
In stock
NSN: 5331-01-479-0630
FSC Code: 5331
MPN: 2025N0552

5331-22-269-2174 (16KNS-16E)

NIIN: 22-269-2174
In stock
NSN: 5331-22-269-2174
FSC Code: 5331
MPN: 16KNS16E

5331-01-572-2658 (9313-022-00A)

NIIN: 01-572-2658
In stock
NSN: 5331-01-572-2658
FSC Code: 5331
MPN: 931302200A

5331-22-269-2177 (16KNS-16E)

NIIN: 22-269-2177
In stock
NSN: 5331-22-269-2177
FSC Code: 5331
MPN: 16KNS16E

5331-22-269-2175 (16KNS-16E)

NIIN: 22-269-2175
In stock
NSN: 5331-22-269-2175
FSC Code: 5331
MPN: 16KNS16E

5331-01-561-8939 (RD-5-11018-0M)

NIIN: 01-561-8939
In stock
NSN: 5331-01-561-8939
FSC Code: 5331
MPN: RD5110180M

5331-22-269-2173 (16KNS-16E)

NIIN: 22-269-2173
In stock
NSN: 5331-22-269-2173
FSC Code: 5331
MPN: 16KNS16E

5331-01-479-0607 (J515CH012)

NIIN: 01-479-0607
In stock
NSN: 5331-01-479-0607
FSC Code: 5331
MPN: J515CH012

5331-22-269-2176 (16KNS-16E)

NIIN: 22-269-2176
In stock
NSN: 5331-22-269-2176
FSC Code: 5331
MPN: 16KNS16E

5331-00-361-5371 (4A-1383-A)

NIIN: 00-361-5371
In stock
NSN: 5331-00-361-5371
FSC Code: 5331
MPN: 4A1383A

5331-00-709-0670 (4A1095A)

NIIN: 00-709-0670
In stock
NSN: 5331-00-709-0670
FSC Code: 5331
MPN: 4A1095A

5331-01-439-9261 (A0528DD-4.00IN)

NIIN: 01-439-9261
In stock
NSN: 5331-01-439-9261
FSC Code: 5331
MPN: A0528DD400IN

5331-01-095-4643 (4989-070S70)

NIIN: 01-095-4643
In stock
NSN: 5331-01-095-4643
FSC Code: 5331
MPN: 4989070S70

5331-01-230-3250 (49870K)

NIIN: 01-230-3250
In stock
NSN: 5331-01-230-3250
FSC Code: 5331
MPN: 49870K

5331-01-230-3249 (49866H)

NIIN: 01-230-3249
In stock
NSN: 5331-01-230-3249
FSC Code: 5331
MPN: 49866H

5331-01-228-7546 (49865K)

NIIN: 01-228-7546
In stock
NSN: 5331-01-228-7546
FSC Code: 5331
MPN: 49865K

5331-01-164-8308 (4972-18)

NIIN: 01-164-8308
In stock
NSN: 5331-01-164-8308
FSC Code: 5331
MPN: 497218

5331-01-164-8309 (4972-42)

NIIN: 01-164-8309
In stock
NSN: 5331-01-164-8309
FSC Code: 5331
MPN: 497242

5331-00-585-1068 (497250-313)

NIIN: 00-585-1068
In stock
NSN: 5331-00-585-1068
FSC Code: 5331
MPN: 497250313

5331-00-117-4769 (49721-24X1PC22)

NIIN: 00-117-4769
In stock
NSN: 5331-00-117-4769
FSC Code: 5331
MPN: 4972124X1PC22