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PartsTable / COMPONENT / AT 21693
AT 21693 ✓ 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 ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.375 INCHES NOMINAL IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, outside_diameter: 3.355 INCHES NOMINAL IN, special_features: SEAL PERIPHERY COATED WITH ELASTOMERIC OR RESINOUS SEALING COMPOUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-152-0314, 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
AT 21693
NSN: 5330-00-152-0314
FSC: 5330
CAGE: 75160 — DEERE & CO (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.375 INCHES NOMINAL IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
outside_diameter3.355 INCHES NOMINAL IN
special_featuresSEAL PERIPHERY COATED WITH ELASTOMERIC OR RESINOUS SEALING COMPOUND
surface_treatmentPLASTIC CASE
housing_bore_diameter3.350 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter2.438 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed1000 FEET PER MINUTE FT
NSN5330-00-152-0314
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AT 21693 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
•
ACCOMMODATED SHAFT DIAMETER: 2.438 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
OUTSIDE DIAMETER: 3.355 INCHES NOMINAL IN
•
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
MATERIAL: STEEL CASE
•
SEAL WIDTH: 0.375 INCHES NOMINAL IN
•
SURFACE TREATMENT: PLASTIC CASE
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER2.438 INCHES NOMINAL IN
CASE STYLESQUARE
SPECIAL FEATURESSEAL PERIPHERY COATED WITH ELASTOMERIC OR RESINOUS SEALING COMPOUND
OUTSIDE DIAMETER3.355 INCHES NOMINAL IN
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
MATERIALSTEEL CASE
SEAL WIDTH0.375 INCHES NOMINAL IN
SURFACE TREATMENTPLASTIC CASE
MATERIALRUBBER SEALING ELEMENT
SEALING ELEMENT STYLEANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
24286Interchangeable
interchangeable cross-reference
interchangeable
23076Interchangeable
interchangeable cross-reference
interchangeable
H23-076Interchangeable
interchangeable cross-reference
interchangeable
A-15599979Interchangeable
interchangeable cross-reference
interchangeable
12471725Interchangeable
interchangeable cross-reference
interchangeable
14072480Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT 21693?
AT 21693 is a SEAL,PLAIN ENCASED.
What parts can replace AT 21693?
There are 13 known substitutes for AT 21693: 24286, 23076, H23-076 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AT 21693?
AT 21693 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-152-0314. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026