PartsTable
Technical Data Sheet
D2081 ✓ 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 BRAKE DRUM is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE PACKINGPLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE, case_style: SQUARE, seal_width: 0.625 INCHES NOMINAL IN, bonnet_type: INSIDE SCREWINSIDE SCREW, cooling_fin: INCLUDED, balancing_pad: NOT INCLUDED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-179-0972, 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
D2081
NSN: 5330-00-179-0972
FSC: 5330
CAGE: 8E499 — KOEHRING CRANES AND EXCAVATORS INC SUB OF NORTHWEST ENGINEERING CO (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE PACKINGPLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE
case_styleSQUARE
seal_width0.625 INCHES NOMINAL IN
bonnet_typeINSIDE SCREWINSIDE SCREW
cooling_finINCLUDED
balancing_padNOT INCLUDED
overall_width4.180 INCHES NOMINAL IN
oil_drain_holeNOT INCLUDED
adjustment_holeINCLUDED
connection_typeTHREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS
inspection_holeNOT INCLUDED
connection_stylePLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS
NSN5330-00-179-0972
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D2081 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
CASE STYLE: SQUARE
MATERIAL: STEEL CASE
SEAL WIDTH: 0.625 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER: 3.500 INCHES NOMINAL IN
SEALING ELEMENT STYLE: ANGULAR
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
HOUSING BORE DIAMETER: 4.501 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
MATERIALSTEEL CASE
SEAL WIDTH0.625 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER3.500 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT
SEALING ELEMENT STYLEANGULAR
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
HOUSING BORE DIAMETER4.501 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
4503-16Interchangeable
interchangeable cross-reference
interchangeable
L8Interchangeable
interchangeable cross-reference
interchangeable
L-8-2558Interchangeable
interchangeable cross-reference
interchangeable
6522A18Interchangeable
interchangeable cross-reference
interchangeable
5947Interchangeable
interchangeable cross-reference
interchangeable
059477Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D2081?
D2081 is a BRAKE DRUM.
What parts can replace D2081?
There are 21 known substitutes for D2081: 4503-16, L8, L-8-2558 and 18 more. Substitute compatibility should be verified for your specific system.
Is D2081 still available?
D2081 is currently cancelled.
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