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Technical Data Sheet
2640-901X7 PIECE 65 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, temp_rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF, center_hole_diameter: 1.724 INCHES MINIMUM AND 1.744 INCHES MAXIMUM IN, elongation_percentage: 160 MAXIMUM, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN, criticality_code_justification: ADYT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-193-0179, 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
2640-901X7 PIECE 65
NSN: 5331-01-193-0179
FSC: 5331 — O-RING
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
center_hole_diameter1.724 INCHES MINIMUM AND 1.744 INCHES MAXIMUM IN
elongation_percentage160 MAXIMUM
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
criticality_code_justificationADYT
NSN5331-01-193-0179
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2640-901X7 PIECE 65 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
TEMP RATING: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
ELONGATION PERCENTAGE: 160 MAXIMUM
CRITICALITY CODE JUSTIFICATION: ADYT
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER: 1.724 INCHES MINIMUM AND 1.744 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
ELONGATION PERCENTAGE160 MAXIMUM
CRITICALITY CODE JUSTIFICATIONADYT
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER1.724 INCHES MINIMUM AND 1.744 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
7255-264 PC43Interchangeable
interchangeable cross-reference
interchangeable
MS28775-224Interchangeable
interchangeable cross-reference
interchangeable
000224EBInterchangeable
interchangeable cross-reference
interchangeable
230079114Interchangeable
interchangeable cross-reference
interchangeable
5330006413407Interchangeable
interchangeable cross-reference
interchangeable
MIL-P-25732Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2640-901X7 PIECE 65?
2640-901X7 PIECE 65 is a O-RING.
What parts can replace 2640-901X7 PIECE 65?
There are 7 known substitutes for 2640-901X7 PIECE 65: 7255-264 PC43, MS28775-224, 000224EB and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2640-901X7 PIECE 65?
2640-901X7 PIECE 65 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-193-0179. This indicates validated use in U.S. government and defense supply chains.
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