1866-21 — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

1866-21: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 4.387 INCHES NOMINAL IN, center_hole_diameter: 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN, elongation_percentage: 250 MAXIMUM, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-853-6655, 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

MRO→ MRO_GENERAL→ 1866-21

NSN: 5331-00-853-6655
NIINs: 008536655, 016681992
FSC: 5331 — O-ring
CAGE: 81168 — STROHMEYER, JULIE A. DBA JULIE A. STROHMEYER (USA)

SPECIFICATIONS

material	RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating	70.0 SHORE DUROMETER A NOMINAL
outside_diameter	4.387 INCHES NOMINAL IN
center_hole_diameter	4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN
elongation_percentage	250 MAXIMUM
cross-sectional_height	0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN	5331-00-853-6655

COMPONENT DIAGRAM

KEY FEATURES

•

CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN

•

OUTSIDE DIAMETER: 4.387 INCHES NOMINAL IN

•

HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL

•

ELONGATION PERCENTAGE: 250 MAXIMUM

•

CENTER HOLE DIAMETER: 4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN

•

MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR

TECHNICAL CHARACTERISTICS

CROSS-SECTIONAL HEIGHT	0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
OUTSIDE DIAMETER	4.387 INCHES NOMINAL IN
HARDNESS RATING	70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE	250 MAXIMUM
CENTER HOLE DIAMETER	4.094 INCHES MINIMUM AND 4.124 INCHES MAXIMUM IN
MATERIAL	RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR

SUBSTITUTES & CROSS-REFERENCES 6

MS29561-243Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

5331PL1185301Reference document

Same NSN cross-reference

Reference document — Informative reference only

2-243 N4771-70Reference document

Same NSN cross-reference

Reference document — Secondary reference

497250-315Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

2-243 47-071Reference document

Same NSN cross-reference

Reference document — Secondary reference

SAE-AS29561Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

Ready to buy 1866-21?

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 1866-21?

1866-21 is a BOOT,DUST AND MOISTURE SEAL. It is classified as a MRO (MRO_GENERAL).

What parts can replace 1866-21?

There are 6 known substitutes for 1866-21: MS29561-243, 5331PL1185301, 2-243 N4771-70 and 3 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 1866-21?

1866-21 is cataloged in the U.S. Government catalog under NSN 5331-00-853-6655. This indicates validated use in U.S. government and defense supply chains.

Community Feedback

1866-21 — BOOT,DUST AND MOISTURE SEAL

Request a Quote — 1866-21