National 7840S Seal or gasket

National 7840S is a seal or gasket in Hardware & Accessories, US catalog. Listed by National Industrial Applications, Product Specifications & Interchange Guide (Catalog No. 430i, July 2019; Federal-Mogul Motorparts).

Radial Shaft Seals

Cross-reference / also printed as

Other number printed by the maker: National 42280S.

As stated by the source of this catalog record, not a fitment check by SearchForPart. Confirm with the manufacturer before ordering.

Specifications

Lip material (code as printed)

S

Shaft size

0.875

Housing bore

1.249

Seal O.D.

1.254

Seal width

0.187

Type / illustration

31

Section as printed

RADIAL SHAFT SEALS

Name taken from

the section heading, pdf page 93

Specifications from National Oil Seals & Bearings Specifications Guide (DRiV, 2021)

Shaft

0.875″ / 22.230mm

Housing bore

1.249″ / 31.720mm

Outside diameter

1.254″ / 31.850mm

Width

0.187″ / 4.750mm

Material

Nitrile

Type

31

Name taken from

the section heading, pdf page 144

About this kind of part (general, written by SearchForPart)

Seals a joint against leaks of fluid, air, water or dust. A leak at a joint or a part taken apart calls for a new one. Check size, material and the joint it seals.

When ordering, give the part number exactly as printed and its maker, and the make, model and year of the truck, trailer, reefer unit or machine (or the engine or unit serial number). SearchForPart shows fitment only as the source printed it: check it before you order.

Reference numbers

Other number printed by the maker

• National 42280S

Listed by the maker as corresponding

• Listed by National as corresponding to Trostel A46079S; interchange not verified by SearchForPart.
• Listed by National as corresponding to L & S Bearing A46897S; interchange not verified by SearchForPart.
• Listed by National as corresponding to Trostel A46897S; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AB1172E; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AB1172E0; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AB1172F; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AB1172F0; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AD1172E; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AD1172E0; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AF7286E; interchange not verified by SearchForPart.
• Listed by National as corresponding to NOK AF7286E0; interchange not verified by SearchForPart.
• Listed by National as corresponding to Sealed Power N8627; interchange not verified by SearchForPart.
• Listed by National as corresponding to ITM PR2486; interchange not verified by SearchForPart.
• Listed by National as corresponding to Transcom Oil Seals 08121VB; interchange not verified by SearchForPart.
• Listed by National as corresponding to Trostel 116A05603; interchange not verified by SearchForPart.
• Listed by National as corresponding to GMC GMC 47168928; interchange not verified by SearchForPart.
• Listed by National as corresponding to Caterpillar 5H6136; interchange not verified by SearchForPart.
• Listed by National as corresponding to International 615499C91; interchange not verified by SearchForPart.
• Listed by National as corresponding to Trostel 61802S; interchange not verified by SearchForPart.
• Listed by National as corresponding to Victor VIC 6460S; interchange not verified by SearchForPart.
• Listed by National as corresponding to Timken 7840S; interchange not verified by SearchForPart.
• Listed by National as corresponding to Mc Cord MCCOR 7399S28; interchange not verified by SearchForPart.
• Listed by National as corresponding to SKF C-R 7840S; interchange not verified by SearchForPart.

Reference numbers as printed by the maker. They are not a statement that the parts are interchangeable. Confirm with the manufacturer before ordering.

Availability

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Catalog information provided by National Industrial Applications, Product Specifications & Interchange Guide (Catalog No. 430i, July 2019; Federal-Mogul Motorparts). Fitment for your equipment is not verified by this page. SearchForPart does not show a price here.