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Technical Data Sheet

202D121-4/42-0 — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

202D121-4/42-0: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYOLEFIN BODY, overall_length: 38.1 MILLIMETERS NOMINAL MM, special_features: ADHESIVE COATING, body_outside_diameter: 23.3 MILLIMETERS NOMINAL MM, part_name_assigned_by_controlling_agency: BOOT,STRAIGHT,WITH LIPS. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-663-4829, 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
202D121-4/42-0
NSN: 5340-01-663-4829
FSC: 5340 — Hardware, Commercial
CAGE: 06090 — TE CONNECTIVITY CORPORATION DBA RAYCHEM PRODUCT DIVISION (USA)
SPECIFICATIONS
materialPLASTIC POLYOLEFIN BODY
overall_length38.1 MILLIMETERS NOMINAL MM
special_featuresADHESIVE COATING
body_outside_diameter23.3 MILLIMETERS NOMINAL MM
part_name_assigned_by_controlling_agencyBOOT,STRAIGHT,WITH LIPS
NSN5340-01-663-4829
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 202D121-4/42-0 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
•
BODY OUTSIDE DIAMETER: 23.3 MILLIMETERS NOMINAL MM
•
MATERIAL: PLASTIC POLYOLEFIN BODY
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER23.3 MILLIMETERS NOMINAL MM
OVERALL LENGTH38.1 MILLIMETERS NOMINAL MM
SPECIAL FEATURESADHESIVE COATING
PART NAME ASSIGNED BY CONTROLLING AGENCYBOOT,STRAIGHT,WITH LIPS
MATERIALPLASTIC POLYOLEFIN BODY
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
70100855Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 202D121-4/42-0?
202D121-4/42-0 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace 202D121-4/42-0?
There is 1 known substitute for 202D121-4/42-0: 70100855. Substitute compatibility should be verified for your specific system.
What is the NSN for 202D121-4/42-0?
202D121-4/42-0 is cataloged in the U.S. Government catalog under NSN 5340-01-663-4829. 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.