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2-156 V747-75 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2-156 V747-75: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM OVERALL, temp_rating: -5.0 CELSIUS AND 205.0 CELSIUS DEGC, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL, operating_medium: FLUID, HIGH TEMPERATURE, peripheral_diameter: 4.407 INCHES MINIMUM AND 4.479 INCHES MAXIMUM IN, center_hole_diameter: 4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-166-8401, 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
2-156 V747-75
NSN: 5331-00-166-8401
NIINs: 001668401, 012835679
FSC: 5331 — O-ring
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM OVERALL
temp_rating-5.0 CELSIUS AND 205.0 CELSIUS DEGC
hardness_rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
operating_mediumFLUID, HIGH TEMPERATURE
peripheral_diameter4.407 INCHES MINIMUM AND 4.479 INCHES MAXIMUM IN
center_hole_diameter4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
type/model_designationRB199MK101/103/104
end_item_identification2840-99-645-9394; 2840-99-645-9395; 2840-99-766-0507; 2840-99-766-0508
cross-sectional_shape_styleO-RING
cross_section_outside_diameter0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
material_document_and_classificationAMS7280 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM D2000/SAE J200 2HK715A1-10B37B38EF31EO78F18Z1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5331-00-166-8401
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2-156 V747-75 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
•
TEMP RATING: -15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 4.407 INCHES MINIMUM AND 4.479 INCHES MAXIMUM IN
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS
TEMP RATING-15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
OUTSIDE DIAMETER4.407 INCHES MINIMUM AND 4.479 INCHES MAXIMUM IN
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
SUBSTITUTES & CROSS-REFERENCES 9
5331001668401Reference document
Same NSN cross-reference
Reference document — Informative reference only
153-015-10Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
M83248/1-156Reference document
Same NSN cross-reference
Reference document — Secondary reference
5331PL2228015Reference document
Same NSN cross-reference
Reference document — Informative reference only
MILR83248Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS9388-156Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2-156 V747-75?
2-156 V747-75 is a O-RING.
What parts can replace 2-156 V747-75?
There are 9 known substitutes for 2-156 V747-75: 5331001668401, 153-015-10, M83248/1-156 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2-156 V747-75?
2-156 V747-75 is cataloged in the U.S. Government catalog under NSN 5331-00-166-8401. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.