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Technical Data Sheet
40337S ✓ 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: LEATHER SEALING ELEMENT, case_style: SQUARE, seal_width: 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN, housing_bore_diameter: 3.150 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 2.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-069-5003, 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
40337S
NSN: 5330-00-069-5003
FSC: 5330
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
housing_bore_diameter3.150 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter2.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed900 FEET PER MINUTE FT
NSN5330-00-069-5003
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40337S 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: 2.500 INCHES NOMINAL IN
CASE STYLE: SQUARE
SEAL WIDTH: 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
MATERIAL: LEATHER SEALING ELEMENT
HOUSING BORE DIAMETER: 3.150 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 900 FEET PER MINUTE FT
SEALING ELEMENT STYLE: ANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER2.500 INCHES NOMINAL IN
CASE STYLESQUARE
SEAL WIDTH0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
MATERIALLEATHER SEALING ELEMENT
MATERIALSTEEL CASE
HOUSING BORE DIAMETER3.150 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED900 FEET PER MINUTE FT
SEALING ELEMENT STYLEANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
3969Interchangeable
interchangeable cross-reference
interchangeable
403-37Interchangeable
interchangeable cross-reference
interchangeable
041219Interchangeable
interchangeable cross-reference
interchangeable
040331Interchangeable
interchangeable cross-reference
interchangeable
69 327 R2Interchangeable
interchangeable cross-reference
interchangeable
43802Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40337S?
40337S is a SEAL,PLAIN ENCASED.
What parts can replace 40337S?
There are 12 known substitutes for 40337S: 3969, 403-37, 041219 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40337S?
40337S is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-069-5003. This indicates validated use in U.S. government and defense supply chains.
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