PartsTable
Technical Data Sheet
Download PDF

53X2990 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

53X2990: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT, case_style: SQUARE, seal_width: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, housing_bore_diameter: 6.130 INCHES MINIMUM AND 6.134 INCHES MAXIMUM IN, sealing_element_style: ANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-882-8935, 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
53X2990
NSN: 5330-00-882-8935
FSC: 5330 — Packing and Gasket Materials
CAGE: 73680 — GARLOCK SEALING TECHNOLOGIES LLC DBA GARLOCK SEALING TECHNOLOGIES LLC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
case_styleSQUARE
seal_width0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
housing_bore_diameter6.130 INCHES MINIMUM AND 6.134 INCHES MAXIMUM IN
sealing_element_styleANGULAR
maximum_pressure_rating7.0 POUNDS PER SQUARE INCH (PSI) LBS
accommodated_shaft_diameter5.120 INCHES MINIMUM AND 5.130 INCHES MAXIMUM IN
material_document_and_classificationASTM D2000 2BG910ABE ASSN STD SINGLE MATERIAL RESPONSE SEALING ELEMENT
accommodated_shaft_maximum_rated_speed3000 FEET PER MINUTE FT
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5330-00-882-8935
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 53X2990 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: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SEALING ELEMENT STYLE: ANGULAR
•
MAXIMUM PRESSURE RATING: 7.0 POUNDS PER SQUARE INCH (PSI) LBS
•
HOUSING BORE DIAMETER: 6.130 INCHES MINIMUM AND 6.134 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000 2BG910ABE ASSN STD SINGLE MATERIAL RESPONSE SEALING ELEMENT
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SEALING ELEMENT STYLEANGULAR
MAXIMUM PRESSURE RATING7.0 POUNDS PER SQUARE INCH (PSI) LBS
HOUSING BORE DIAMETER6.130 INCHES MINIMUM AND 6.134 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000 2BG910ABE ASSN STD SINGLE MATERIAL RESPONSE SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER5.120 INCHES MINIMUM AND 5.130 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 2
10068355-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
21091-2990Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 53X2990?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 53X2990?
53X2990 is a SEAL,PLAIN ENCASED.
What parts can replace 53X2990?
There are 2 known substitutes for 53X2990: 10068355-3, 21091-2990. Substitute compatibility should be verified for your specific system.
What is the NSN for 53X2990?
53X2990 is cataloged in the U.S. Government catalog under NSN 5330-00-882-8935. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 53X2990

✓ 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.