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PartsTable / COMPONENT / 268551
268551 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

VALVE,REGULATING,FLUID PRESSURE. Key specifications include part_name_assigned_by_controlling_agency: GAS REGULATOR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-350-5642, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
268551
NSN: 5330-00-350-5642
FSC: 5330
CAGE: 52788 — GENERAL MOTORS CORP SAGINAW DIV (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyGAS REGULATOR
NSN5330-00-350-5642
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 268551 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: D
•
CROSS-SECTIONAL HEIGHT: 0.130 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000 2BC515AB ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR OVERALL
•
PERIPHERAL DIAMETER: 3.570 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 3.371 INCHES MINIMUM AND 3.411 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLED
CROSS-SECTIONAL HEIGHT0.130 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000 2BC515AB ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
PERIPHERAL DIAMETER3.570 INCHES NOMINAL IN
CENTER HOLE DIAMETER3.371 INCHES MINIMUM AND 3.411 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
1016-036-A590-3Interchangeable
interchangeable cross-reference
interchangeable
2230-7Interchangeable
interchangeable cross-reference
interchangeable
41-503-1Interchangeable
interchangeable cross-reference
interchangeable
3W34970-101Interchangeable
interchangeable cross-reference
interchangeable
76949Interchangeable
interchangeable cross-reference
interchangeable
25649Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 268551?
268551 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 268551?
There are 9 known substitutes for 268551: 1016-036-A590-3, 2230-7, 41-503-1 and 6 more. Substitute compatibility should be verified for your specific system.
Is 268551 still available?
268551 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026