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Technical Data Sheet
PartsTable / COMPONENT / GKT31-5
GKT31-5 ✓ 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: COPPER OVERALL, outside_diameter: 4.000 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.500 INCHES NOMINAL IN, surface_treatment: LEAD OVERALL, 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 5330-00-908-6843, 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
GKT31-5
NSN: 5330-00-908-6843
FSC: 5330
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialCOPPER OVERALL
outside_diameter4.000 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.500 INCHES NOMINAL IN
surface_treatmentLEAD OVERALL
cross-sectional_thickness0.016 INCHES NOMINAL IN
cross-sectional_shape_styleRECTANGULAR METAL
NSN5330-00-908-6843
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GKT31-5 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
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR METAL
•
CROSS-SECTIONAL THICKNESS: 0.016 INCHES NOMINAL IN
•
SURFACE TREATMENT: LEAD OVERALL
•
OUTSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.500 INCHES NOMINAL IN
•
MATERIAL: COPPER OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
SURFACE TREATMENTLEAD OVERALL
OUTSIDE DIAMETER4.000 INCHES NOMINAL IN
APERTURE DIAMETER3.500 INCHES NOMINAL IN
MATERIALCOPPER OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
23552Interchangeable
interchangeable cross-reference
interchangeable
8281Interchangeable
interchangeable cross-reference
interchangeable
BA306Interchangeable
interchangeable cross-reference
interchangeable
FLASH RELEASE 2Interchangeable
interchangeable cross-reference
interchangeable
10164155Interchangeable
interchangeable cross-reference
interchangeable
GKT31-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GKT31-5?
GKT31-5 is a GASKET.
What parts can replace GKT31-5?
There are 10 known substitutes for GKT31-5: 23552, 8281, BA306 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GKT31-5?
GKT31-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-908-6843. 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