PartsTable / O-RING / 243-7657
243-7657
✓ 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 BUTADIENE-ACRYLONITRILE CLASS NBR, temp_rating: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 4.351 INCHES MINIMUM AND 4.423 INCHES MAXIMUM IN, center_hole_diameter: 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN, elongation_percentage: 331 MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-035-2235, 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
243-7657
NSN: 5331-01-035-2235 FSC: 5331 — O-RINGCAGE: 25184 — PARKER HANNIFIN CORPORATION DIV O-RING DIVISION (USA)
SPECIFICATIONS
material RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR temp_rating -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF hardness_rating 70.0 SHORE DUROMETER A NOMINAL outside_diameter 4.351 INCHES MINIMUM AND 4.423 INCHES MAXIMUM IN center_hole_diameter 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN elongation_percentage 331 MAXIMUM cross-sectional_height 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN NSN 5331-01-035-2235
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: 243-7657
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: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
• CENTER HOLE DIAMETER: 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN
• MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
• ELONGATION PERCENTAGE: 331 MAXIMUM
• TEMP RATING: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
• OUTSIDE DIAMETER: 4.351 INCHES MINIMUM AND 4.423 INCHES MAXIMUM IN
• HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN CENTER HOLE DIAMETER 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN MATERIAL RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR ELONGATION PERCENTAGE 331 MAXIMUM TEMP RATING -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF OUTSIDE DIAMETER 4.351 INCHES MINIMUM AND 4.423 INCHES MAXIMUM IN HARDNESS RATING 70.0 SHORE DUROMETER A NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
1212-9544 Interchangeable interchangeable cross-reference
interchangeable
9544 Interchangeable interchangeable cross-reference
interchangeable
09544 Interchangeable interchangeable cross-reference
interchangeable
1068944 Interchangeable interchangeable cross-reference
interchangeable
7722479P3 Interchangeable interchangeable cross-reference
interchangeable
B677 Interchangeable interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 243-7657?
243-7657 is a O-RING.
What parts can replace 243-7657?
There are 16 known substitutes for 243-7657: 1212-9544, 9544, 09544 and 13 more. Substitute compatibility should be verified for your specific system.
Is 243-7657 still available?
243-7657 is currently cancelled.
Request a Quote — 243-7657