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Technical Data Sheet
2MM35 ✓ 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 COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, hole_diameter: 0.250 INCHES NOMINAL IN, outside_diameter: 4.625 INCHES NOMINAL IN, bolt_circle_diameter: 3.875 INCHES NOMINAL IN, securing_device_type: THREADED FASTENER, peripheral_shape_style: ROUND, MULTI HOLES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-138-5582, 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
2MM35
NSN: 5340-01-138-5582
FSC: 5340
CAGE: 61178 — TUTHILL CORPORATION DBA TUTHILL PUMP GROUP (USA)
SPECIFICATIONS
materialCOPPER ALLOY
hole_diameter0.250 INCHES NOMINAL IN
outside_diameter4.625 INCHES NOMINAL IN
bolt_circle_diameter3.875 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleROUND, MULTI HOLES
bolt_circle_hole_quantity8
mounting_opening_shape_styleUNTHREADED HOLE
NSN5340-01-138-5582
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2MM35 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
BOLT CIRCLE DIAMETER: 3.875 INCHES NOMINAL IN
OUTSIDE DIAMETER: 4.625 INCHES NOMINAL IN
MATERIAL: COPPER ALLOY
HOLE DIAMETER: 0.250 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLE: ROUND, MULTI HOLES
BOLT CIRCLE HOLE QUANTITY: 8
SECURING DEVICE TYPE: THREADED FASTENER
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
TECHNICAL CHARACTERISTICS (FLIS)
BOLT CIRCLE DIAMETER3.875 INCHES NOMINAL IN
OUTSIDE DIAMETER4.625 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
HOLE DIAMETER0.250 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
BOLT CIRCLE HOLE QUANTITY8
SECURING DEVICE TYPETHREADED FASTENER
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
28-181Interchangeable
interchangeable cross-reference
interchangeable
2946-BInterchangeable
interchangeable cross-reference
interchangeable
2946-B ITEM 6Interchangeable
interchangeable cross-reference
interchangeable
2C24-X673Interchangeable
interchangeable cross-reference
interchangeable
2946-B ITEM 1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2MM35?
2MM35 is a COVER,ACCESS.
What parts can replace 2MM35?
There are 5 known substitutes for 2MM35: 28-181, 2946-B, 2946-B ITEM 6 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2MM35?
2MM35 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-138-5582. This indicates validated use in U.S. government and defense supply chains.
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