Question 1

What is a slide bearing system?

Accepted Answer

A precision Silicon Carbide (SiC) bearing system used on specialty mixers and agitators where shaft deflection must be controlled and hydrodynamic lubrication is not available.

Question 2

Are Astra seals compatible with major OEM pump brands?

Accepted Answer

Yes. Every Astra seal is engineered as a direct dimensional and performance replacement for major OEMs including John Crane, Flowserve, EagleBurgmann, AESSEAL, Chesterton, and Sepco. Provide the OEM part number or a photo and we cross-reference it to the matching Astra model.

Question 3

What materials are available?

Accepted Answer

Standard face combinations include Silicon Carbide (SiC) vs Carbon, SiC vs SiC, and Tungsten Carbide (TC) vs TC. Elastomers include Viton (FKM), EPDM, NBR, Aflas, Kalrez, and PTFE. Custom material specs are available for aggressive or high-purity media.

Question 4

What is the typical lead time?

Accepted Answer

Standard cartridge and component seals ship in 2–4 weeks. Custom-engineered designs typically take 6–10 weeks. Emergency and expedited production is available on request.

Slide Bearing

AS HD130.195.000

Slide Bearing — Common Questions

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