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Technical Data Sheet
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TM3871 ✓ 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 SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, seal_width: 0.250 INCHES NOMINAL IN, construction: ONE-PIECE, housing_bore_diameter: 1.624 INCHES NOMINAL IN, accommodated_shaft_diameter: 1.000 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-076-3342, 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
TM3871
NSN: 5330-00-076-3342
FSC: 5330
CAGE: 5RQL2 — DRS ENVIRONMENTAL SYSTEMS INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
seal_width0.250 INCHES NOMINAL IN
constructionONE-PIECE
housing_bore_diameter1.624 INCHES NOMINAL IN
accommodated_shaft_diameter1.000 INCHES NOMINAL IN
NSN5330-00-076-3342
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: TM3871 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
•
ACCOMMODATED SHAFT DIAMETER: 1.000 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 1.624 INCHES NOMINAL IN
•
SEAL WIDTH: 0.250 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CONSTRUCTION: ONE-PIECE
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER1.000 INCHES NOMINAL IN
HOUSING BORE DIAMETER1.624 INCHES NOMINAL IN
SEAL WIDTH0.250 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
CONSTRUCTIONONE-PIECE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
BH-1201Interchangeable
interchangeable cross-reference
interchangeable
103762-33Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TM3871?
TM3871 is a SEAL,PLAIN.
What parts can replace TM3871?
There are 2 known substitutes for TM3871: BH-1201, 103762-33. Substitute compatibility should be verified for your specific system.
Is TM3871 still available?
TM3871 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026