Oil Seals SB/TB
SB and TB seals are variants of double-lip seals, designed for demanding industrial applications where both primary oil sealing and active protection against contaminants are required. The SB has an outer metal housing, similar to the SA, but with a double lip. The TB has an elastomer-coated housing (similar to the TA), offering additional protection against the housing. Both types are used in heavy-duty transmissions, industrial machinery, pumps and equipment exposed to contaminated environments. In the Hydraulic Seals Store catalogue, you will find SB and TB oil seals made from NBR and FKM, available from stock with fast delivery in Romania.
Features of SB-TB lip seals for industrial applications
SB and TB seals combine a double seal design with a robust housing construction, offering superior protection compared to single A or SA seals. They are recommended for applications where the working environment is aggressive or contaminated. See also AS and DC seals for other types offering advanced protection.
Function of SB-TB oil seals
Shaft sealing and protection against leaks
The primary sealing lip prevents oil or technical fluid from leaking out of the housing. The secondary lip provides active protection against external contaminants, functioning similarly to a scraper.
Stability under demanding operating conditions
The robust construction of SB-TB oil seals ensures their stability under varying pressures, high temperatures and exposure to corrosive agents. They are a reliable choice for equipment operating in harsh environmental conditions.
How to choose the right SB-TB lip seal
When selecting an SB or TB lip seal, check the shaft diameter, the outer diameter of the housing, the width, the lip material and the condition of the housing. Also refer to the SA-TA lip seals for comparison.
The benefits of buying SB-TB seals from the Hydraulic Seals Store
Hydraulic Seals Store offers SB and TB seals from stock at all times, in various sizes and materials, at competitive prices, with fast delivery in Romania. Our team is available to provide technical support. Buy high-quality SB-TB seals at a great price, directly from our catalogue.
Frequently Asked Questions
What types of machinery are SB oil seals suitable for?
SB oil seals are suitable for industrial machinery, heavy-duty transmissions, pumps and equipment exposed to contaminated environments, where both oil sealing and protection against dust or dirt are required.
What sets TB oil seals apart from other types of oil seals?
TB oil seals have a casing that is fully coated with elastomer, which provides an additional seal against the housing and resistance to corrosion. In addition, the double lip offers active protection against contaminants.
How do you choose the right SB or TB profile for your application?
Choose SB if the housing is in good condition and shows no signs of corrosion. Opt for TB if the housing is corroded, worn or has wider tolerances, as the elastomer casing compensates for these defects.
When is preventative replacement of SB seals necessary?
Preventative replacement is recommended during routine equipment inspections or when slight dampness is observed on the shaft, a sign that the main lip is beginning to lose its sealing effectiveness.