PartsTable
Technical Data Sheet
PartsTable / COMPONENT / R18451
R18451 ✓ 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: ASBESTOS AND RUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER POLYISOPRENE SYNTHETIC CLASS IR OVERALL, hole_diameter: 0.531 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 10.500 INCHES NOMINAL IN, overall_length: 23.500 INCHES NOMINAL IN, bearing_surface_width: 1.000 INCHES NOMINAL IN, cross-sectional_thickness: 0.031 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 5330-00-163-2443, 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
R18451
NSN: 5330-00-163-2443
FSC: 5330
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialASBESTOS AND RUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER POLYISOPRENE SYNTHETIC CLASS IR OVERALL
hole_diameter0.531 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width10.500 INCHES NOMINAL IN
overall_length23.500 INCHES NOMINAL IN
bearing_surface_width1.000 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-G-12803,+1161-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5330-00-163-2443
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: R18451 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 SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
HOLE DIAMETER: 0.531 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,+1161-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: ASBESTOS AND RUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER POLYISOPRENE SYNTHETIC CLASS IR OVERALL
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
BEARING SURFACE WIDTH: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL LENGTH23.500 INCHES NOMINAL IN
HOLE DIAMETER0.531 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,+1161-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALASBESTOS AND RUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER POLYISOPRENE SYNTHETIC CLASS IR OVERALL
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
OVERALL WIDTH10.500 INCHES NOMINAL IN
BEARING SURFACE WIDTH1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
STYLE234Interchangeable
interchangeable cross-reference
interchangeable
32A8748Interchangeable
interchangeable cross-reference
interchangeable
18451Interchangeable
interchangeable cross-reference
interchangeable
JAD1Interchangeable
interchangeable cross-reference
interchangeable
MS91405A1BInterchangeable
interchangeable cross-reference
interchangeable
MIL-C-172Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy R18451?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is R18451?
R18451 is a GASKET.
What parts can replace R18451?
There are 12 known substitutes for R18451: STYLE234, 32A8748, 18451 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R18451?
R18451 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-163-2443. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — R18451

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026