PartsTable
Technical Data Sheet
1675A3 ✓ 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 LOCK,FLUSH is a the manufacturer industrial component. Key specifications include width: 2.000 INCHES NOMINAL IN, length: 3.500 INCHES NOMINAL IN, material: NICKEL CASE, thickness: 0.688 INCHES NOMINAL CASE IN, style_designator: RECTANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-229-0831, 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
1675A3
NSN: 5340-01-229-0831
FSC: 5340
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
width2.000 INCHES NOMINAL IN
length3.500 INCHES NOMINAL IN
materialNICKEL CASE
thickness0.688 INCHES NOMINAL CASE IN
style_designatorRECTANGULAR
NSN5340-01-229-0831
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1675A3 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
WIDTH: 2.000 INCHES NOMINAL IN
LENGTH: 3.500 INCHES NOMINAL IN
STYLE DESIGNATOR: RECTANGULAR
MATERIAL: NICKEL CASE
THICKNESS: 0.688 INCHES NOMINAL CASE IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH2.000 INCHES NOMINAL IN
LENGTH3.500 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR
MATERIALNICKEL CASE
THICKNESS0.688 INCHES NOMINAL CASE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
4860MUpgraded Successor
successor cross-reference
successor
123-001-0001-01Upgraded Successor
successor cross-reference
successor
4660Upgraded Successor
successor cross-reference
successor
580R394H03Interchangeable
interchangeable cross-reference
interchangeable
057401-503Interchangeable
interchangeable cross-reference
interchangeable
4860Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1675A3?
1675A3 is a LOCK,FLUSH.
What parts can replace 1675A3?
There are 13 known substitutes for 1675A3: 4860M, 123-001-0001-01, 4660 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1675A3?
1675A3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-229-0831. This indicates validated use in U.S. government and defense supply chains.
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