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ER-5303 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ER-5303: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.125 INCHES NOMINAL IN, outside_diameter: 1.129 INCHES NOMINAL IN, housing_bore_diameter: 1.125 INCHES NOMINAL IN, sealing_element_style: VERTICAL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-074-2600, 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
ER-5303
NSN: 5330-00-074-2600
FSC: 5330 — Packing and Gasket Materials
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.125 INCHES NOMINAL IN
outside_diameter1.129 INCHES NOMINAL IN
housing_bore_diameter1.125 INCHES NOMINAL IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter0.875 INCHES NOMINAL IN
NSN5330-00-074-2600
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ER-5303 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: 0.125 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: VERTICAL
•
OUTSIDE DIAMETER: 1.129 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 1.125 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 0.875 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.125 INCHES NOMINAL IN
SEALING ELEMENT STYLEVERTICAL
OUTSIDE DIAMETER1.129 INCHES NOMINAL IN
HOUSING BORE DIAMETER1.125 INCHES NOMINAL IN
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER0.875 INCHES NOMINAL IN
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 5
13650Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
T22101Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
110HM28Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1K9060Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
T 22069Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ER-5303?
ER-5303 is a SEAL,PLAIN ENCASED.
What parts can replace ER-5303?
There are 5 known substitutes for ER-5303: 13650, T22101, 110HM28 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ER-5303?
ER-5303 is cataloged in the U.S. Government catalog under NSN 5330-00-074-2600. 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.