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206657 — STOCK,FORE END,GUN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

206657: STOCK,FORE END,GUN.

The STOCK,FORE END,GUN is a the manufacturer industrial component. Key specifications include model_number: MP5-N, weapon_for_which_designed: SUBMACHINE GUN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-013-7625, 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
206657
NSN: 5330-01-013-7625
NIINs: 010137625, 013758165
FSC: 5330 — Packing and Gasket Materials
CAGE: 31361 — WOODWARD, INC. (USA)
SPECIFICATIONS
model_numberMP5-N
weapon_for_which_designedSUBMACHINE GUN
NSN5330-01-013-7625
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 206657 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
•
CROSS-SECTIONAL HEIGHT: 0.062 INCHES MINIMUM AND 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM0.072 INCHES MAXIMUM IN
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CROSS-SECTIONAL WIDTH: 0.085 INCHES MINIMUM AND 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM0.095 INCHES MAXIMUM IN
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MINOR WIDTH: 0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM0.050 INCHES MAXIMUM IN
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MATERIAL: RUBBER SYNTHETIC OVERALL
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FABRICATION METHOD: SOLIDSOLID
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CONSTRUCTION: SOLIDSOLID
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ATTACHMENT METHOD: CEMENTEDCEMENTED
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.062 INCHES MINIMUM AND 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM0.072 INCHES MAXIMUM IN
CROSS-SECTIONAL WIDTH0.085 INCHES MINIMUM AND 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM0.095 INCHES MAXIMUM IN
MINOR WIDTH0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM0.050 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC OVERALL
FABRICATION METHODSOLIDSOLID
CONSTRUCTIONSOLIDSOLID
ATTACHMENT METHODCEMENTEDCEMENTED
SUBSTITUTES & CROSS-REFERENCES 1
A8241-403 / 823 40-188Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 206657?
206657 is a STOCK,FORE END,GUN.
What parts can replace 206657?
There is 1 known substitute for 206657: A8241-403 / 823 40-188. Substitute compatibility should be verified for your specific system.
What is the NSN for 206657?
206657 is cataloged in the U.S. Government catalog under NSN 5330-01-013-7625. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.