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Technical Data Sheet
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A547-640 — SEAL,DUST,COAX

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A547-640: SEAL,DUST,COAX.

The SEAL,DUST,COAX is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-086-9942, 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
A547-640
NSN: 5330-00-086-9942
FSC: 5330 — Packing and Gasket Materials
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
general_characteristics_item_descriptionRUBBER,SYNTHETIC,MIL-R-880; 1-125 IN. LG; 0.625 IN. W; 0.625 IN. HT; TWO HOLES 0.600 IN. DISTANCE CENTER TO CENTER; EACH HOLE IS SPLIT THRU TO EDGE OF SEAL ALONG LG IN
NSN5330-00-086-9942
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A547-640 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: RUBBER,SYNTHETIC,MIL-R-880; 1-125 IN. LG; 0.625 IN. W; 0.625 IN. HT; TWO HOLES 0.600 IN. DISTANCE CENTER TO CENTER; EACH HOLE IS SPLIT THRU TO EDGE OF SEAL ALONG LG IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONRUBBER,SYNTHETIC,MIL-R-880; 1-125 IN. LG; 0.625 IN. W; 0.625 IN. HT; TWO HOLES 0.600 IN. DISTANCE CENTER TO CENTER; EACH HOLE IS SPLIT THRU TO EDGE OF SEAL ALONG LG IN
SUBSTITUTES & CROSS-REFERENCES 2
3081Reference document
Same NSN cross-reference
Reference document — Secondary reference
547A003081Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A547-640?
A547-640 is a SEAL,DUST,COAX.
What parts can replace A547-640?
There are 2 known substitutes for A547-640: 3081, 547A003081. Substitute compatibility should be verified for your specific system.
What is the NSN for A547-640?
A547-640 is cataloged in the U.S. Government catalog under NSN 5330-00-086-9942. This indicates validated use in U.S. government and defense supply chains.
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