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PartsTable / COMPONENT / 11-3757
11-3757 ✓ 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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, hole_diameter: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, surface_treatment: CHROMATE OVERALL, inside_corner_radius: 1.380 INCHES NOMINAL IN, outside_corner_radius: 2.810 INCHES MINIMUM AND 2.830 INCHES MAXIMUM IN, cross-sectional_thickness: 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-447-6104, 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
11-3757
NSN: 5330-00-447-6104
FSC: 5330
CAGE: 83259 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV COMPOSITE SEALING SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
hole_diameter0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
surface_treatmentCHROMATE OVERALL
inside_corner_radius1.380 INCHES NOMINAL IN
outside_corner_radius2.810 INCHES MINIMUM AND 2.830 INCHES MAXIMUM IN
cross-sectional_thickness0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
material_document_and_classificationMIL-R-6855,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5330-00-447-6104
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 11-3757 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: MIL-R-6855,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: CHROMATE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: METAL AND SYNTHETIC RUBBER
•
OUTSIDE CORNER RADIUS: 2.810 INCHES MINIMUM AND 2.830 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HOLE DIAMETER: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
CROSS-SECTIONAL THICKNESS: 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCHROMATE OVERALL
CROSS-SECTIONAL SHAPE STYLEMETAL AND SYNTHETIC RUBBER
OUTSIDE CORNER RADIUS2.810 INCHES MINIMUM AND 2.830 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE DIAMETER0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
CROSS-SECTIONAL THICKNESS0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
INSIDE CORNER RADIUS1.380 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
7718Interchangeable
interchangeable cross-reference
interchangeable
2761Interchangeable
interchangeable cross-reference
interchangeable
111971949BInterchangeable
interchangeable cross-reference
interchangeable
34162Interchangeable
interchangeable cross-reference
interchangeable
117964Interchangeable
interchangeable cross-reference
interchangeable
QDAX1-117964Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11-3757?
11-3757 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace 11-3757?
There are 16 known substitutes for 11-3757: 7718, 2761, 111971949B and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11-3757?
11-3757 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-447-6104. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026