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Technical Data Sheet
CA11057-18 ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: NICKEL, design_type: FRICTION, overall_diameter: 3.370 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN, special_features: 2 THD HOLES THRU SIDEWALL OF CAP 90 DEG APART 5/16-18 NC, inside_diameter_length: 0.750 INCHES NOMINAL IN, material_document_and_classification: QQ-N-281, CLASS A OR CLASS B FED SPEC SINGLE MATERIAL RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-184-6679, 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
CA11057-18
NSN: 5340-01-184-6679
FSC: 5340
CAGE: 83130 — AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS (USA)
SPECIFICATIONS
materialNICKEL
design_typeFRICTION
overall_diameter3.370 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
special_features2 THD HOLES THRU SIDEWALL OF CAP 90 DEG APART 5/16-18 NC
inside_diameter_length0.750 INCHES NOMINAL IN
material_document_and_classificationQQ-N-281, CLASS A OR CLASS B FED SPEC SINGLE MATERIAL RESPONSE
tube_outside_diameter_for_which_designed2.533 INCHES MINIMUM AND 2.536 INCHES MAXIMUM IN
NSN5340-01-184-6679
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CA11057-18 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: NICKEL
INSIDE DIAMETER LENGTH: 0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281, CLASS A OR CLASS B FED SPEC SINGLE MATERIAL RESPONSE
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.533 INCHES MINIMUM AND 2.536 INCHES MAXIMUM IN
OVERALL DIAMETER: 3.370 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
DESIGN TYPE: FRICTION
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL
SPECIAL FEATURES2 THD HOLES THRU SIDEWALL OF CAP 90 DEG APART 5/16-18 NC
INSIDE DIAMETER LENGTH0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281, CLASS A OR CLASS B FED SPEC SINGLE MATERIAL RESPONSE
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.533 INCHES MINIMUM AND 2.536 INCHES MAXIMUM IN
OVERALL DIAMETER3.370 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
DESIGN TYPEFRICTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
01922Interchangeable
interchangeable cross-reference
interchangeable
6002-513Interchangeable
interchangeable cross-reference
interchangeable
1922Interchangeable
interchangeable cross-reference
interchangeable
03Y61TM-0192Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CA11057-18?
CA11057-18 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace CA11057-18?
There are 4 known substitutes for CA11057-18: 01922, 6002-513, 1922 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CA11057-18?
CA11057-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-184-6679. This indicates validated use in U.S. government and defense supply chains.
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