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Technical Data Sheet
PartsTable / COMPONENT / 6B203742
6B203742 ✓ 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

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, hardness_rating: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM OVERALL, outside_diameter: 0.547 INCHES NOMINAL IN, aperture_diameter: 0.250 INCHES NOMINAL IN, cross-sectional_thickness: 0.156 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-251-4738, 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
6B203742
NSN: 5330-00-251-4738
FSC: 5330
CAGE: 23382 — FWD SEAGRAVE HOLDINGS LP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
hardness_rating85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM OVERALL
outside_diameter0.547 INCHES NOMINAL IN
aperture_diameter0.250 INCHES NOMINAL IN
cross-sectional_thickness0.156 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationASRM D2000 2BG915A1BE1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-251-4738
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6B203742 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
•
APERTURE DIAMETER: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASRM D2000 2BG915A1BE1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
•
CROSS-SECTIONAL THICKNESS: 0.156 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.547 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE DIAMETER0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
MATERIAL DOCUMENT AND CLASSIFICATIONASRM D2000 2BG915A1BE1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
CROSS-SECTIONAL THICKNESS0.156 INCHES NOMINAL IN
OUTSIDE DIAMETER0.547 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
6002-528Interchangeable
interchangeable cross-reference
interchangeable
37495-1Interchangeable
interchangeable cross-reference
interchangeable
251352Interchangeable
interchangeable cross-reference
interchangeable
8509481-1Interchangeable
interchangeable cross-reference
interchangeable
XT12420Interchangeable
interchangeable cross-reference
interchangeable
41938Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6B203742?
6B203742 is a GASKET.
What parts can replace 6B203742?
There are 28 known substitutes for 6B203742: 6002-528, 37495-1, 251352 and 25 more. Substitute compatibility should be verified for your specific system.
Is 6B203742 still available?
6B203742 is currently cancelled.
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Last verified: July 2026