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PartsTable / COMPONENT / 21862187-100
21862187-100 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, peripheral_diameter: 4.020 INCHES NOMINAL IN, center_hole_diameter: 3.540 INCHES NOMINAL IN, cross-sectional_height: 0.430 INCHES NOMINAL IN, cross-sectional_shape_style: SPECIAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-172-0185, 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
21862187-100
NSN: 5330-00-172-0185
FSC: 5330
CAGE: 076M6 — AMZ ALABAMA INC. (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
peripheral_diameter4.020 INCHES NOMINAL IN
center_hole_diameter3.540 INCHES NOMINAL IN
cross-sectional_height0.430 INCHES NOMINAL IN
cross-sectional_shape_styleSPECIAL
NSN5330-00-172-0185
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21862187-100 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
•
CENTER HOLE DIAMETER: 3.540 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
PERIPHERAL DIAMETER: 4.020 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.430 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER3.540 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
PERIPHERAL DIAMETER4.020 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
CROSS-SECTIONAL HEIGHT0.430 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
32304991Interchangeable
interchangeable cross-reference
interchangeable
011761Interchangeable
interchangeable cross-reference
interchangeable
632277-459Interchangeable
interchangeable cross-reference
interchangeable
72R302Interchangeable
interchangeable cross-reference
interchangeable
032078Interchangeable
interchangeable cross-reference
interchangeable
01-0020Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21862187-100?
21862187-100 is a PACKING,PREFORMED.
What parts can replace 21862187-100?
There are 23 known substitutes for 21862187-100: 32304991, 011761, 632277-459 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21862187-100?
21862187-100 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-172-0185. 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