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ER5541 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ER5541: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT B, case_style: RECESSED, seal_width: 0.250 INCHES NOMINAL IN, outside_diameter: 1.756 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 1.752 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-080-0309, 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
ER5541
NSN: 5330-00-080-0309
FSC: 5330 — Packing and Gasket Materials
CAGE: 79150 — DANA AUTOMOTIVE SYSTEMS GROUP, LLC DBA DANA SEALING PRODUCTS (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT B
case_styleRECESSED
seal_width0.250 INCHES NOMINAL IN
outside_diameter1.756 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter1.752 INCHES NOMINAL IN
sealing_element_styleANGULAR-OPPOSED
accommodated_shaft_diameter1.000 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed3600 FEET PER MINUTE FT
NSN5330-00-080-0309
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ER5541 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: 0.250 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR-OPPOSED
•
OUTSIDE DIAMETER: 1.756 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 1.752 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3600 FEET PER MINUTE FT
•
CASE STYLE: RECESSED
•
ACCOMMODATED SHAFT DIAMETER: 1.000 INCHES NOMINAL IN
•
SURFACE TREATMENT: PLASTIC CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.250 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR-OPPOSED
OUTSIDE DIAMETER1.756 INCHES NOMINAL IN
HOUSING BORE DIAMETER1.752 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3600 FEET PER MINUTE FT
CASE STYLERECESSED
ACCOMMODATED SHAFT DIAMETER1.000 INCHES NOMINAL IN
SURFACE TREATMENTPLASTIC CASE
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT A
SUBSTITUTES & CROSS-REFERENCES 6
2487938Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
AF3717RReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
47989Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
093005Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9998Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
33792Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ER5541?
ER5541 is a SEAL,PLAIN ENCASED.
What parts can replace ER5541?
There are 6 known substitutes for ER5541: 2487938, AF3717R, 47989 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ER5541?
ER5541 is cataloged in the U.S. Government catalog under NSN 5330-00-080-0309. 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.