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Technical Data Sheet
PartsTable / O-RING / MIL-R-83248C TY 1 CL 1
MIL-R-83248C TY 1 CL 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

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, temp_rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 6.645 INCHES NOMINAL IN, center_hole_diameter: 7.930 INCHES MINIMUM AND 8.020 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-020-0064, 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
MIL-R-83248C TY 1 CL 1
NSN: 5331-00-020-0064
FSC: 5331 — O-RING
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
temp_rating-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
hardness_rating75.0 SHORE DUROMETER A NOMINAL
outside_diameter6.645 INCHES NOMINAL IN
center_hole_diameter7.930 INCHES MINIMUM AND 8.020 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
NSN5331-00-020-0064
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-R-83248C TY 1 CL 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
•
CROSS-SECTIONAL HEIGHT: 0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-83248, CL 1 MIL SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1 CLASS
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
•
CENTER HOLE DIAMETER: 0.915 INCHES MINIMUM AND 0.933 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-83248, CL 1 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALRUBBER FLUOROCARBON CLASS FPM
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 CLASS
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
CENTER HOLE DIAMETER0.915 INCHES MINIMUM AND 0.933 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
M83248/1-910Interchangeable
interchangeable cross-reference
interchangeable
137.000.825Interchangeable
interchangeable cross-reference
interchangeable
6V-4589Interchangeable
interchangeable cross-reference
interchangeable
D84232 PIECE 53Interchangeable
interchangeable cross-reference
interchangeable
M83248/1-212Interchangeable
interchangeable cross-reference
interchangeable
2-212-V884-75Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-R-83248C TY 1 CL 1?
MIL-R-83248C TY 1 CL 1 is a O-RING.
What parts can replace MIL-R-83248C TY 1 CL 1?
There are 32 known substitutes for MIL-R-83248C TY 1 CL 1: M83248/1-910, 137.000.825, 6V-4589 and 29 more. Substitute compatibility should be verified for your specific system.
Is MIL-R-83248C TY 1 CL 1 still available?
MIL-R-83248C TY 1 CL 1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026