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PartsTable / COMPONENT / 102999
102999 ✓ 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

PISTON,HYDRAULIC BRAKE,MASTER CY. Key specifications include special_features: NHA IS BRAKE ASSEMBLY, end_item_identification: 3830-01-538-1421, WINCH ATTACHMENT, SINGLE DRUM, MODEL PA80, part_name_assigned_by_controlling_agency: BRAKE PISTON. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-1651, 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
102999
NSN: 5330-00-641-1651
FSC: 5330
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
special_featuresNHA IS BRAKE ASSEMBLY
end_item_identification3830-01-538-1421, WINCH ATTACHMENT, SINGLE DRUM, MODEL PA80
part_name_assigned_by_controlling_agencyBRAKE PISTON
NSN5330-00-641-1651
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 102999 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
•
MATERIAL: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
•
SEALING ELEMENT STYLE: ANGULAR
•
SEAL WIDTH: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT DIAMETER: 1.312 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
HOUSING BORE DIAMETER: 2.124 INCHES MINIMUM AND 2.126 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
SEALING ELEMENT STYLEANGULAR
SEAL WIDTH0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER1.312 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
CASE STYLESQUARE
HOUSING BORE DIAMETER2.124 INCHES MINIMUM AND 2.126 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
C136-1Interchangeable
interchangeable cross-reference
interchangeable
212110Interchangeable
interchangeable cross-reference
interchangeable
LARC-MY91Interchangeable
interchangeable cross-reference
interchangeable
10529AEInterchangeable
interchangeable cross-reference
interchangeable
520-0046Interchangeable
interchangeable cross-reference
interchangeable
100936Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 102999?
102999 is a PISTON,HYDRAULIC BRAKE,MASTER CY.
What parts can replace 102999?
There are 28 known substitutes for 102999: C136-1, 212110, LARC-MY91 and 25 more. Substitute compatibility should be verified for your specific system.
Is 102999 still available?
102999 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