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Quick Answer: A rotary seal manufacturer supplies seals that retain oil around rotating shafts and exclude dirt, water, and dust. CORASEALS provides radial shaft seals, oil seals, cassette seals, V-rings, and bearing seals in standard and custom sizes. Send the shaft diameter, housing bore, width, speed, oil type, and temperature to receive a quotation.
Rotary seals are used in gearboxes, pumps, motors, axles, and bearing housings. The seal must match the shaft diameter, housing bore, and width. Any mismatch in surface finish, runout, or material selection can cause early leakage.
CORASEALS offers the following rotary seal types:
Do not rely on the profile code alone. TC, SC, and other code names can have different meanings in different catalogs. The cross section, lip arrangement, and dimensions must be checked before ordering.
Rotary shaft seals are normally described by shaft diameter, housing bore, and width. Some customers refer to ID, OD, and width. CORASEALS asks for all three dimensions plus the bore depth and shoulder details when available.
Many rotary shaft seals follow DIN 3760 or ISO 6194. Standard sizes are common, but custom sizes and non-standard profiles are also available. Always measure the actual shaft and housing. Do not order by model name alone.
Material selection depends on fluid, temperature, and speed. NBR is commonly selected for mineral oil. FKM resists higher temperatures and many fuels. HNBR offers better heat and wear resistance. PTFE can be used for low friction or chemical exposure, often with a metal shell or O-ring energizer.
No single material suits every application. EPDM rotary seals work with water and some brake fluids but not with most mineral oils. Silicone seals may tolerate wide temperature ranges but have lower strength than NBR or FKM. Confirm fluid compatibility before choosing a rubber compound.
Before ordering a rotary seal, check the shaft surface finish, hardness, and runout. A shaft with spiral grooves, pitting, or excessive runout can destroy the lip quickly. The housing bore must have a clean lead-in chamfer. Sharp edges should be removed before installation.
The lip direction must match the fluid side. A reversed lip can leak immediately or after a short run time. When the seal is installed, apply even pressure around the outer case and avoid contact between the lip and sharp splines or keyways.
A clear inquiry helps any rotary seal manufacturer or supplier match the right seal quickly. Send the following details to CORASEALS:
If you only have an old seal, measure the ID, OD, and width. Photograph the lip side and the outer surface. CORASEALS can help match the profile against standard options and custom tooling.
A rotary seal is the broader category. An oil seal is a type of radial shaft seal designed mainly to retain oil. People often use the two terms for the same part. CORASEALS asks for profile and dimensions to avoid confusion.
FKM, HNBR, and PTFE are common choices when temperature exceeds typical NBR limits. PTFE is often used for high temperature and chemical resistance. The right material depends on fluid compatibility and shaft speed.
Measure the outside diameter of the seal body, the inside diameter at the lip, and the total width. For housing compatibility, also measure the bore and its depth. For shaft compatibility, measure the shaft diameter and check the contact area for wear.
Yes. CORASEALS handles custom rotary seal sizes based on your drawing or sample. Send the exact dimensions, material requirement, fluid, temperature, speed, and quantity. Custom tooling and lead time may depend on the profile and material.
Common causes include shaft surface damage, wrong lip direction, a nicked lip during installation, excessive shaft runout, hardened lip from heat, or material swelling from the wrong fluid. Always confirm the shaft condition and fluid compatibility before replacing the seal.
To get rotary seal pricing and lead time from CORASEALS, send the seal type, material, shaft diameter, housing bore, width, operating temperature, pressure, medium, shaft speed, drawing, sample photo, and required quantity.
