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637151 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

637151: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: PLASTIC URETHANE AND RUBBER BUTADIENE NITRILE OVERALL, special_features: MATERIAL = BUNA-N URETHANE, peripheral_diameter: 1.625 INCHES NOMINAL IN, center_hole_diameter: 1.250 INCHES NOMINAL IN, cross-sectional_height: 0.312 INCHES NOMINAL IN, cross-sectional_shape_style: U WITH O-RING. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-365-7271, 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
637151
NSN: 5330-01-365-7271
FSC: 5330 — Packing and Gasket Materials
CAGE: 30076 — HYSTER-YALE GROUP, INC. (USA)
SPECIFICATIONS
materialPLASTIC URETHANE AND RUBBER BUTADIENE NITRILE OVERALL
special_featuresMATERIAL = BUNA-N URETHANE
peripheral_diameter1.625 INCHES NOMINAL IN
center_hole_diameter1.250 INCHES NOMINAL IN
cross-sectional_height0.312 INCHES NOMINAL IN
cross-sectional_shape_styleU WITH O-RING
NSN5330-01-365-7271
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 637151 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: 0.312 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: U WITH O-RING
•
PERIPHERAL DIAMETER: 1.625 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: PLASTIC URETHANE AND RUBBER BUTADIENE NITRILE OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.312 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEU WITH O-RING
PERIPHERAL DIAMETER1.625 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL = BUNA-N URETHANE
CENTER HOLE DIAMETER1.250 INCHES NOMINAL IN
MATERIALPLASTIC URETHANE AND RUBBER BUTADIENE NITRILE OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
246880Reference document
Same NSN cross-reference
Reference document — Secondary reference
461518701250-312Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
18701250-312BReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 637151?
637151 is a PACKING,PREFORMED.
What parts can replace 637151?
There are 3 known substitutes for 637151: 246880, 461518701250-312, 18701250-312B. Substitute compatibility should be verified for your specific system.
What is the NSN for 637151?
637151 is cataloged in the U.S. Government catalog under NSN 5330-01-365-7271. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.