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Technical Data Sheet
PartsTable / COMPONENT / S535
S535 ✓ 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 LEVEL WIND ASSEMBLY is a the manufacturer industrial component. Key specifications include end_item_identification: USED WITH SPECTACLES INDUSTRIAL NSN 4240-01-268-1734, general_characteristics_item_description: INDUSTRIAL TYPE,COLOR CLEAR,MATERIAL HI-IMPACT POLYCARBONATE WITH SCRATCH RESISTANT COATING,NOT UNBREAKABLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-529-4294, 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
S535
NSN: 5340-00-529-4294
FSC: 5340
CAGE: 47496 — THE DEWEY ELECTRONICS CORPORATION DIV PITOMETER LOG DIVISION (USA)
SPECIFICATIONS
end_item_identificationUSED WITH SPECTACLES INDUSTRIAL NSN 4240-01-268-1734
general_characteristics_item_descriptionINDUSTRIAL TYPE,COLOR CLEAR,MATERIAL HI-IMPACT POLYCARBONATE WITH SCRATCH RESISTANT COATING,NOT UNBREAKABLE
NSN5340-00-529-4294
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S535 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: NICKEL ALLOY
•
INSIDE DIAMETER: 0.394 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.187 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.844 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY
INSIDE DIAMETER0.394 INCHES NOMINAL IN
MATERIAL THICKNESS0.187 INCHES NOMINAL IN
OUTSIDE DIAMETER0.844 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
2-3FPC57Interchangeable
interchangeable cross-reference
interchangeable
2-1JPC57Interchangeable
interchangeable cross-reference
interchangeable
3-2KPC57Interchangeable
interchangeable cross-reference
interchangeable
S-535Interchangeable
interchangeable cross-reference
interchangeable
NM-174Interchangeable
interchangeable cross-reference
interchangeable
S-535PIECE50Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S535?
S535 is a LEVEL WIND ASSEMBLY.
What parts can replace S535?
There are 18 known substitutes for S535: 2-3FPC57, 2-1JPC57, 3-2KPC57 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S535?
S535 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-529-4294. 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