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GKT398 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

GKT398: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROSILICONE CLASS FQ, hole_diameter: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 2.250 INCHES NOMINAL IN, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 2.005 INCHES NOMINAL IN, special_features: CONTAINS NON-ASBESTOS MATERIAL. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-007-1599, 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
GKT398
NSN: 5331-01-007-1599
NIINs: 010071599, 014659848
FSC: 5331 — O-ring
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER FLUOROSILICONE CLASS FQ
hole_diameter0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width2.250 INCHES NOMINAL IN
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter2.005 INCHES NOMINAL IN
special_featuresCONTAINS NON-ASBESTOS MATERIAL
style_designatorNON-CIRCULAR
aperture_diameter0.750 INCHES NOMINAL IN
bolt_hole_quantity2
bolt_circle_diameter1.625 INCHES NOMINAL IN
center_hole_diameter1.784 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
NSN5331-01-007-1599
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GKT398 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 HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.005 INCHES NOMINAL IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 1.784 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.005 INCHES NOMINAL IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER1.784 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROSILICONE CLASS FQ
SUBSTITUTES & CROSS-REFERENCES 9
5331PL0658288Reference document
Same NSN cross-reference
Reference document — Informative reference only
2-133L677-70Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-25988/1Reference document
Same NSN cross-reference
Reference document — Identification reference
69483P103-1799Reference document
Same NSN cross-reference
Reference document — Secondary reference
M25988/1-133Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
M25988-1-133ESReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GKT398?
GKT398 is a GASKET.
What parts can replace GKT398?
There are 9 known substitutes for GKT398: 5331PL0658288, 2-133L677-70, MIL-DTL-25988/1 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GKT398?
GKT398 is cataloged in the U.S. Government catalog under NSN 5331-01-007-1599. This indicates validated use in U.S. government and defense supply chains.
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