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156631 — FELT,MECHANICAL,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

156631: FELT,MECHANICAL,PREFORMED.

The FELT,MECHANICAL,PREFORMED is a the manufacturer industrial component. Key specifications include material: WOOL OVERALL, aperture_width: 0.031 INCHES NOMINAL IN, aperture_length: 0.094 INCHES NOMINAL IN, style_designator: OVAL, bearing_surface_width: 0.125 INCHES NOMINAL IN, cross-sectional_width: 0.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-201-9976, 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
156631
NSN: 5330-00-201-9976
NIINs: 002019976, 007675636
FSC: 5330 — Packing and Gasket Materials
CAGE: 0XEU2 — ALNITAK CORPORATION (USA)
SPECIFICATIONS
materialWOOL OVERALL
aperture_width0.031 INCHES NOMINAL IN
aperture_length0.094 INCHES NOMINAL IN
style_designatorOVAL
bearing_surface_width0.125 INCHES NOMINAL IN
cross-sectional_width0.062 INCHES NOMINAL IN
cross-sectional_height0.125 INCHES NOMINAL IN
cross-sectional_shape_styleRECTANGULAR
NSN5330-00-201-9976
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 156631 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: 2.251 IN. MIN 2.253 IN. MAX OD,0.602 IN. MIN FREE LG IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION2.251 IN. MIN 2.253 IN. MAX OD,0.602 IN. MIN FREE LG IN
SUBSTITUTES & CROSS-REFERENCES 2
5018T48P01Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5293-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 156631?
156631 is a FELT,MECHANICAL,PREFORMED.
What parts can replace 156631?
There are 2 known substitutes for 156631: 5018T48P01, 5293-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 156631?
156631 is cataloged in the U.S. Government catalog under NSN 5330-00-201-9976. 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.