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21370-0760 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21370-0760: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM SEALING ELEMENT, seal_width: 0.375 INCHES NOMINAL IN, construction: ONE-PIECE, housing_bore_diameter: 2.375 INCHES NOMINAL IN, accommodated_shaft_diameter: 1.625 INCHES NOMINAL IN, reference_data_and_literature: GARLOCK SEALING TECHNOLOGIES,KLOZURE OIL SEALS AND BEARING ISOLATORS MASTER CATALOG. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-576-4355, 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
21370-0760
NSN: 5330-01-576-4355
FSC: 5330 — Packing and Gasket Materials
CAGE: 73680 — GARLOCK SEALING TECHNOLOGIES LLC DBA GARLOCK SEALING TECHNOLOGIES LLC (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM SEALING ELEMENT
seal_width0.375 INCHES NOMINAL IN
constructionONE-PIECE
housing_bore_diameter2.375 INCHES NOMINAL IN
accommodated_shaft_diameter1.625 INCHES NOMINAL IN
reference_data_and_literatureGARLOCK SEALING TECHNOLOGIES,KLOZURE OIL SEALS AND BEARING ISOLATORS MASTER CATALOG
material_document_and_classificationGARLOCK 21370 MFR REF SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyKLOZURE SMALL DIAMETER MODEL 66 OIL SEAL
NSN5330-01-576-4355
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21370-0760 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: 0.375 INCHES NOMINAL IN
•
REFERENCE DATA AND LITERATURE: GARLOCK SEALING TECHNOLOGIES,KLOZURE OIL SEALS AND BEARING ISOLATORS MASTER CATALOG
•
HOUSING BORE DIAMETER: 2.375 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: GARLOCK 21370 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
ACCOMMODATED SHAFT DIAMETER: 1.625 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.375 INCHES NOMINAL IN
REFERENCE DATA AND LITERATUREGARLOCK SEALING TECHNOLOGIES,KLOZURE OIL SEALS AND BEARING ISOLATORS MASTER CATALOG
HOUSING BORE DIAMETER2.375 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONGARLOCK 21370 MFR REF SINGLE MATERIAL RESPONSE OVERALL
ACCOMMODATED SHAFT DIAMETER1.625 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYKLOZURE SMALL DIAMETER MODEL 66 OIL SEAL
MATERIALSTEEL CASE
MATERIALRUBBER FLUOROCARBON CLASS FPM SEALING ELEMENT
MATERIALSTEEL CORROSION RESISTING SPRING
CONSTRUCTIONONE-PIECE
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
170A937 REV P PT NO 20Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
959A462-069Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21370-0760?
21370-0760 is a SEAL,PLAIN ENCASED.
What parts can replace 21370-0760?
There are 2 known substitutes for 21370-0760: 170A937 REV P PT NO 20, 959A462-069. Substitute compatibility should be verified for your specific system.
What is the NSN for 21370-0760?
21370-0760 is cataloged in the U.S. Government catalog under NSN 5330-01-576-4355. 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.