PartsTable
Technical Data Sheet
Download PDF

MT319-12Z — CAP-PLUG,PROTECTIVE,DUST AND MOI

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MT319-12Z: CAP-PLUG,PROTECTIVE,DUST AND MOI.

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OR COPPER ALLOY 715, special_features: ZINC PENCIL AND SEAL INCLUDED, material_document_and_classification: QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE OR ASTM B122, ALLOY C71500 FED SPEC 2ND MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-200-5862, 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
MT319-12Z
NSN: 5340-01-200-5862
FSC: 5340 — Hardware, Commercial
CAGE: 0ASY6 — DERBYSHIRE MARINE PRODUCTS, LLC DBA DERBYSHIRE MARINE PRODUCTS LLC (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OR COPPER ALLOY 715
special_featuresZINC PENCIL AND SEAL INCLUDED
material_document_and_classificationQQ-N-281 FED SPEC 1ST MATERIAL RESPONSE OR ASTM B122, ALLOY C71500 FED SPEC 2ND MATERIAL RESPONSE
NSN5340-01-200-5862
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MT319-12Z 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE OR ASTM B122, ALLOY C71500 FED SPEC 2ND MATERIAL RESPONSE
•
MATERIAL: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OR COPPER ALLOY 715
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC 1ST MATERIAL RESPONSE OR ASTM B122, ALLOY C71500 FED SPEC 2ND MATERIAL RESPONSE
SPECIAL FEATURESZINC PENCIL AND SEAL INCLUDED
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OR COPPER ALLOY 715
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
C286625Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy MT319-12Z?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MT319-12Z?
MT319-12Z is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace MT319-12Z?
There is 1 known substitute for MT319-12Z: C286625. Substitute compatibility should be verified for your specific system.
What is the NSN for MT319-12Z?
MT319-12Z is cataloged in the U.S. Government catalog under NSN 5340-01-200-5862. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MT319-12Z

✓ 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.