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Technical Data Sheet
PartsTable / MRO / 21-042
21-042 ✓ Verified by PartsTable
Lindy · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The FILTER ELEMENT,FLUID is a Lindy industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, case_style: SQUARE, head_style: PAN, seal_width: 0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN, head_height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN, thread_class: 2A A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-292-0490, 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
MRO→ MRO_GENERAL→ 21-042
NSN: 5330-00-292-0490
FSC: 5330
CAGE: 73680 — GARLOCK SEALING TECHNOLOGIES LLC DBA GARLOCK SEALING TECHNOLOGIES LLC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
case_styleSQUARE
head_stylePAN
seal_width0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN
head_height0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
thread_class2A A
body_diameter0.125 INCHES NOMINAL IN
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.158 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
included_angle60.0 DEGREES NOMINAL
overall_length4.000 INCHES NOMINAL IN
point_diameter0.047 INCHES NOMINAL IN
NSN5330-00-292-0490
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21-042 MFR: Lindy ⚠ 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
•
SEALING ELEMENT STYLE: ANGULAR
•
CASE STYLE: SQUARE
•
MATERIAL: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
HOUSING BORE DIAMETER: 10.750 INCHES NOMINAL IN
•
SEAL WIDTH: 0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT DIAMETER: 8.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
HOUSING BORE DIAMETER10.750 INCHES NOMINAL IN
SEAL WIDTH0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER8.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
272SC186Interchangeable
interchangeable cross-reference
interchangeable
TMT-99-2Interchangeable
interchangeable cross-reference
interchangeable
90-2Interchangeable
interchangeable cross-reference
interchangeable
N13339PC3613Interchangeable
interchangeable cross-reference
interchangeable
76S120Interchangeable
interchangeable cross-reference
interchangeable
9026Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-042?
21-042 is a FILTER ELEMENT,FLUID manufactured by Lindy. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21-042?
There are 26 known substitutes for 21-042: 272SC186, TMT-99-2, 90-2 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21-042?
21-042 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-292-0490. 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