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Technical Data Sheet
PartsTable / COMPONENT / 11656937
11656937 ✓ 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: ASBESTOS AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, hole_diameter: 0.598 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 10.400 INCHES NOMINAL IN, special_features: ONE BOLT HOLE 1.255 IN.DIA IN, aperture_diameter: 4.995 INCHES MINIMUM AND 5.015 INCHES MAXIMUM IN, cross-sectional_thickness: 0.016 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-933-3318, 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
11656937
NSN: 5330-00-933-3318
FSC: 5330
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialASBESTOS AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
hole_diameter0.598 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width10.400 INCHES NOMINAL IN
special_featuresONE BOLT HOLE 1.255 IN.DIA IN
aperture_diameter4.995 INCHES MINIMUM AND 5.015 INCHES MAXIMUM IN
bolt_hole_quantity4
cross-sectional_thickness0.016 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-G-12803,+1242-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5330-00-933-3318
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 11656937 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: 4.995 INCHES MINIMUM AND 5.015 INCHES MAXIMUM IN
•
CROSS-SECTIONAL THICKNESS: 0.016 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,+1242-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
HOLE DIAMETER: 0.598 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT HOLE QUANTITY: 4
•
MATERIAL: ASBESTOS AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH10.400 INCHES NOMINAL IN
APERTURE DIAMETER4.995 INCHES MINIMUM AND 5.015 INCHES MAXIMUM IN
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,+1242-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER0.598 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT HOLE QUANTITY4
MATERIALASBESTOS AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
SPECIAL FEATURESONE BOLT HOLE 1.255 IN.DIA IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
8561Interchangeable
interchangeable cross-reference
interchangeable
70-0061-1492-3Interchangeable
interchangeable cross-reference
interchangeable
7000001176Interchangeable
interchangeable cross-reference
interchangeable
81413Interchangeable
interchangeable cross-reference
interchangeable
STATIMATICC0NCENTRATETYPEBInterchangeable
interchangeable cross-reference
interchangeable
68009Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11656937?
11656937 is a GASKET.
What parts can replace 11656937?
There are 9 known substitutes for 11656937: 8561, 70-0061-1492-3, 7000001176 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11656937?
11656937 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-933-3318. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026