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Technical Data Sheet
PartsTable / COMPONENT / 21158-0898
21158-0898 ✓ 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 ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.375 INCHES NOMINAL IN, surface_treatment: ZINC CASE, housing_bore_diameter: 2.437 INCHES NOMINAL IN, sealing_element_style: ANGULAR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-171-4905, 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
21158-0898
NSN: 5330-00-171-4905
FSC: 5330
CAGE: 73680 — GARLOCK SEALING TECHNOLOGIES LLC DBA GARLOCK SEALING TECHNOLOGIES LLC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.375 INCHES NOMINAL IN
surface_treatmentZINC CASE
housing_bore_diameter2.437 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter1.750 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed3000 FEET PER MINUTE FT
NSN5330-00-171-4905
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21158-0898 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
•
HOUSING BORE DIAMETER: 2.437 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL OVERALL
•
TEMP RATING: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3000 FEET PER MINUTE FT
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
•
COLOR: BLACK
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
HOUSING BORE DIAMETER2.437 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL OVERALL
TEMP RATING-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3000 FEET PER MINUTE FT
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
COLORBLACK
SEAL WIDTH0.375 INCHES NOMINAL IN
MATERIALSTEEL CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
17290Interchangeable
interchangeable cross-reference
interchangeable
PSK2-17290Interchangeable
interchangeable cross-reference
interchangeable
21158-0898Interchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
63X898Interchangeable
interchangeable cross-reference
interchangeable
805506-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21158-0898?
21158-0898 is a SEAL,PLAIN ENCASED.
What parts can replace 21158-0898?
There are 14 known substitutes for 21158-0898: 17290, PSK2-17290, 21158-0898 and 11 more. Substitute compatibility should be verified for your specific system.
Is 21158-0898 still available?
21158-0898 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