PartsTable
Technical Data Sheet
Download PDF

55851 — TRACK BALL ASSEMBLY

✓ Government record, cited
Tactic · ORING SEAL
PRODUCT OVERVIEW

55851: TRACK BALL ASSEMBLY.

The TRACK BALL ASSEMBLY is a Tactic industrial component. Key specifications include material: NICKEL ALLOY AND RUBBER SYNTHETIC OVERALL, construction: SOLIDSOLID, style_designator: CIRCULAR, aperture_diameter: 16.460 INCHES MINIMUM AND 16.460 INCHES MINIMUM AND 16.620 INCHES MAXIMUM16.620 INCHES MAXIMUM IN, fabrication_method: SOLIDSOLID, storage_temp_range: -55.0 TO 85.0 CELSIUS DEGC. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-021-3792, 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
55851
NSN: 5330-01-021-3792
NIINs: 010213792, 010891758, 013605354
FSC: 5330 — Packing and Gasket Materials
CAGE: 3DBN7 — KIRKHILL INC DIV KIRKHILL INC, HASKON DIVISION (USA)
SPECIFICATIONS
materialNICKEL ALLOY AND RUBBER SYNTHETIC OVERALL
constructionSOLIDSOLID
style_designatorCIRCULAR
aperture_diameter16.460 INCHES MINIMUM AND 16.460 INCHES MINIMUM AND 16.620 INCHES MAXIMUM16.620 INCHES MAXIMUM IN
fabrication_methodSOLIDSOLID
storage_temp_range-55.0 TO 85.0 CELSIUS DEGC
cross-sectional_width1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN
cross-sectional_height0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN
end_item_identificationB52/H OAS/CMI PACER GYM
cross-sectional_thickness0.050 INCHES MINIMUM AND 0.050 INCHES MINIMUM AND 0.080 INCHES MAXIMUM0.080 INCHES MAXIMUM IN
material_document_and_classificationINCONEL FSCM 28553 MFR REF 1ST MATERIAL RESPONSE OVERALL
NSN5330-01-021-3792
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 55851 MFR: Tactic ⚠ 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
•
CROSS-SECTIONAL THICKNESS: 0.050 INCHES MINIMUM AND 0.050 INCHES MINIMUM AND 0.080 INCHES MAXIMUM0.080 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: INCONEL FSCM 28553 MFR REF 1ST MATERIAL RESPONSE OVERALL
•
APERTURE DIAMETER: 16.460 INCHES MINIMUM AND 16.460 INCHES MINIMUM AND 16.620 INCHES MAXIMUM16.620 INCHES MAXIMUM IN
•
MATERIAL: NICKEL ALLOY AND RUBBER SYNTHETIC OVERALL
•
FABRICATION METHOD: SOLIDSOLID
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.050 INCHES MINIMUM AND 0.050 INCHES MINIMUM AND 0.080 INCHES MAXIMUM0.080 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONINCONEL FSCM 28553 MFR REF 1ST MATERIAL RESPONSE OVERALL
APERTURE DIAMETER16.460 INCHES MINIMUM AND 16.460 INCHES MINIMUM AND 16.620 INCHES MAXIMUM16.620 INCHES MAXIMUM IN
MATERIALNICKEL ALLOY AND RUBBER SYNTHETIC OVERALL
FABRICATION METHODSOLIDSOLID
CONSTRUCTIONSOLIDSOLID
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
Ready to buy 55851?
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 55851?
55851 is a TRACK BALL ASSEMBLY manufactured by Tactic.
What is the NSN for 55851?
55851 is cataloged in the U.S. Government catalog under NSN 5330-01-021-3792. 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 — 55851

✓ 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.