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Technical Data Sheet
21086C ✓ 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 overall_width: 4.469 INCHES NOMINAL IN, overall_length: 34.688 INCHES NOMINAL IN, hardness_rating: 40.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL, cross-sectional_thickness: 0.031 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION, material_document_and_classification: MIL-C-6183,TY 2,CL 1,GR A MIL SPEC ALL MATERIAL RESPONSES OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-429-0295, 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
21086C
NSN: 5330-00-429-0295
FSC: 5330
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
overall_width4.469 INCHES NOMINAL IN
overall_length34.688 INCHES NOMINAL IN
hardness_rating40.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-C-6183,TY 2,CL 1,GR A MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5330-00-429-0295
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21086C 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 THICKNESS: 0.031 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-6183,TY 2,CL 1,GR A MIL SPEC ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING: 40.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
OVERALL WIDTH4.469 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-6183,TY 2,CL 1,GR A MIL SPEC ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING40.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL LENGTH34.688 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
UDB-940300Interchangeable
interchangeable cross-reference
interchangeable
38404Interchangeable
interchangeable cross-reference
interchangeable
38323Interchangeable
interchangeable cross-reference
interchangeable
SB155GPNInterchangeable
interchangeable cross-reference
interchangeable
38404REVCInterchangeable
interchangeable cross-reference
interchangeable
12607221-009Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21086C?
21086C is a GASKET.
What parts can replace 21086C?
There are 9 known substitutes for 21086C: UDB-940300, 38404, 38323 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21086C?
21086C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-429-0295. This indicates validated use in U.S. government and defense supply chains.
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