Link-Belt 3A 7939 Outer Seal Ring for Link-Belt Cranes (3A7939)

What is Link-Belt part 3A 7939?

Link-Belt 3A 7939 (also written 3A7939) is a Link-Belt Cranes part number listed as “RING SEAL OUTER” (outer seal ring for Link-Belt cranes), sold each.

A shaft seal or seal ring keeps lubricant in and dirt and water out where a rotating or sliding part passes through a housing. A worn seal shows up as oil at the shaft or housing; seals are often replaced whenever the assembly is opened for other work.

Which Link-Belt crane does 3A 7939 fit?

Link-Belt Cranes builds rough-terrain, truck, all-terrain, telescopic crawler and lattice crawler cranes, and one part number can be used on more than one model. We confirm the fit by crane model and serial number: send both with your request and we check 3A 7939 against them before quoting.

A customer asked PE Energy for this part in January 2026, in a parts list for a Link-Belt crane.

What are the details of Link-Belt 3A 7939?

Part number: 3A 7939 / 3A7939
Listed description: RING SEAL OUTER
Part type: Outer Seal Ring
Unit: EA (each)
Part number of: Link-Belt Cranes
Supply: quote-only, by part number

How do I request a quote for Link-Belt 3A 7939?

Request a quote by part number 3A 7939. Tell us the quantity, the crane model and serial number, and the delivery country. We confirm price, availability and lead time with the quote. Spaces in Link-Belt part numbers are optional: 3A 7939 and 3A7939 are the same part.

PE Energy is an independent supplier. We are not an authorized Link-Belt dealer or distributor and are not affiliated with or endorsed by Link-Belt Cranes. Link-Belt® is a trademark of its owner; the name and part numbers are used only to identify the parts we can source and quote.