PartsTable / COMPONENT / RA3540-1
RA3540-1
✓ 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
PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC, drive_type: SERRATED, design_type: THREADED, overall_diameter: 0.250 INCHES NOMINAL IN, features_provided: BEVELED SEAT, thread_size_and_series/type_designator: 1/4-18 NPT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-200-8636, 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
RA3540-1
NSN: 5340-00-200-8636 FSC: 5340 CAGE: 51663 — HYDRO-AIRE AEROSPACE CORP. DBA LEAR ROMEC DIV LEAR ROMEC (USA)
SPECIFICATIONS
material PLASTIC drive_type SERRATED design_type THREADED overall_diameter 0.250 INCHES NOMINAL IN features_provided BEVELED SEAT thread_size_and_series/type_designator 1/4-18 NPT NSN 5340-00-200-8636
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: RA3540-1
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
• OVERALL DIAMETER: 0.250 INCHES NOMINAL IN
• THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1/4-18 NPT
• FEATURES PROVIDED: BEVELED SEAT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL PLASTIC DESIGN TYPE THREADED DRIVE TYPE SERRATED OVERALL DIAMETER 0.250 INCHES NOMINAL IN THREAD SIZE AND SERIES/TYPE DESIGNATOR 1/4-18 NPT FEATURES PROVIDED BEVELED SEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
PA6264 Interchangeable interchangeable cross-reference
interchangeable
1249240 Interchangeable interchangeable cross-reference
interchangeable
26211 Interchangeable interchangeable cross-reference
interchangeable
1.3291 Interchangeable interchangeable cross-reference
interchangeable
4.3774 Interchangeable interchangeable cross-reference
interchangeable
43774 Interchangeable Same NIIN cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RA3540-1?
RA3540-1 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace RA3540-1?
There are 12 known substitutes for RA3540-1: PA6264, 1249240, 26211 and 9 more. Substitute compatibility should be verified for your specific system.
Is RA3540-1 still available?
RA3540-1 is currently cancelled.
Request a Quote — RA3540-1