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Technical Data Sheet
PartsTable / COMPONENT / 2851-3-6
2851-3-6 ✓ 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

PARTS KIT,BEARING REPLACEMENT,ME. Key specifications include document_type: PARTS LIST, document_source: 53800, component_document_origin: GOVERNMENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-023-0698, 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
2851-3-6
NSN: 5330-01-023-0698
FSC: 5330
CAGE: 84136 — ANCHOR/DARLING VALVE CO (USA)
SPECIFICATIONS
document_typePARTS LIST
document_source53800
component_document_originGOVERNMENT
component_document_page_number4
NSN5330-01-023-0698
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2851-3-6 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: 3.960 INCHES MINIMUM AND 3.970 INCHES MAXIMUM IN
•
PERIPHERAL DIAMETER: 4.374 INCHES MINIMUM AND 4.376 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
PRECIOUS MATERIAL: SILVER
•
PRECIOUS MATERIAL AND LOCATION: EXTERNAL SURFACES SILVER
•
SURFACE TREATMENT: SILVER AND GRAPHITE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: CUP
•
CROSS-SECTIONAL HEIGHT: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER3.960 INCHES MINIMUM AND 3.970 INCHES MAXIMUM IN
PERIPHERAL DIAMETER4.374 INCHES MINIMUM AND 4.376 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
PRECIOUS MATERIALSILVER
PRECIOUS MATERIAL AND LOCATIONEXTERNAL SURFACES SILVER
SURFACE TREATMENTSILVER AND GRAPHITE OVERALL
CROSS-SECTIONAL SHAPE STYLECUP
CROSS-SECTIONAL HEIGHT0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
ANGLE24.0 DEGREES NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
600212Interchangeable
interchangeable cross-reference
interchangeable
DF2B250Interchangeable
interchangeable cross-reference
interchangeable
285136Interchangeable
interchangeable cross-reference
interchangeable
800003Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2851-3-6?
2851-3-6 is a PARTS KIT,BEARING REPLACEMENT,ME.
What parts can replace 2851-3-6?
There are 4 known substitutes for 2851-3-6: 600212, DF2B250, 285136 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2851-3-6?
2851-3-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-023-0698. 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