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Technical Data Sheet
49740K4 ✓ 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 SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, seal_width: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN, temp_rating: -275.0 FAHRENHEIT AND 325.0 FAHRENHEIT DEGF, construction: SOLID, housing_bore_diameter: 2.751 INCHES MINIMUM AND 2.753 INCHES MAXIMUM IN, accommodated_shaft_diameter: 1.750 INCHES NOMINAL 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 5330-00-047-4042, 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
49740K4
NSN: 5330-00-047-4042
FSC: 5330
CAGE: 96313 — HAYES-DANA LTD CORPORATE OFFICES CORPORATE OFFICES (CAN)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
seal_width0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
temp_rating-275.0 FAHRENHEIT AND 325.0 FAHRENHEIT DEGF
constructionSOLID
housing_bore_diameter2.751 INCHES MINIMUM AND 2.753 INCHES MAXIMUM IN
accommodated_shaft_diameter1.750 INCHES NOMINAL IN
cross-sectional_shape_styleDUAL LIP
NSN5330-00-047-4042
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 49740K4 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
SEAL WIDTH: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER: 1.750 INCHES NOMINAL IN
HOUSING BORE DIAMETER: 2.751 INCHES MINIMUM AND 2.753 INCHES MAXIMUM IN
MATERIAL: STEEL INTERNALLY MOLDED-IN REINFORCEMENT
CROSS-SECTIONAL SHAPE STYLE: DUAL LIP
TEMP RATING: -275.0 FAHRENHEIT AND 325.0 FAHRENHEIT DEGF
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER1.750 INCHES NOMINAL IN
HOUSING BORE DIAMETER2.751 INCHES MINIMUM AND 2.753 INCHES MAXIMUM IN
MATERIALSTEEL INTERNALLY MOLDED-IN REINFORCEMENT
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
CROSS-SECTIONAL SHAPE STYLEDUAL LIP
TEMP RATING-275.0 FAHRENHEIT AND 325.0 FAHRENHEIT DEGF
CONSTRUCTIONSOLID
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
GGG-D-751 TYBCL2Interchangeable
interchangeable cross-reference
interchangeable
B94.11MInterchangeable
interchangeable cross-reference
interchangeable
2510 5/8Interchangeable
interchangeable cross-reference
interchangeable
6320-3Interchangeable
interchangeable cross-reference
interchangeable
A3794Interchangeable
interchangeable cross-reference
interchangeable
6320-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 49740K4?
49740K4 is a SEAL,PLAIN.
What parts can replace 49740K4?
There are 16 known substitutes for 49740K4: GGG-D-751 TYBCL2, B94.11M, 2510 5/8 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 49740K4?
49740K4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-047-4042. This indicates validated use in U.S. government and defense supply chains.
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