oil seals manufacturer

Oil Seals Manufacturer: Sourcing, Materials, and RFQ Guide from CORASEALS

Quick Answer: Buyers looking for an oil seals manufacturer or supplier can source standard and custom shaft seals through CORASEALS. Send the shaft diameter, housing bore, seal width, fluid, operating temperature, shaft speed, lip type, and required quantity. CORASEALS supplies oil seals, rotary shaft seals, radial shaft seals, lip seals, cassette seals, and related shaft sealing products.

Oil Seal Products Supplied by CORASEALS

CORASEALS covers oil seals for rotating shaft positions in industrial equipment. The supply scope includes rotary shaft seals, radial shaft seals, lip seals, V-rings, cassette seals, bearing seals, wheel hub seals, axle seals, gearbox seals, floating seals, and mechanical face seals. Buyers can request oil seals with different case designs, lip configurations, spring arrangements, and rubber OD or metal OD forms.

Dimension Order and Shaft Seal Profiles

Oil seal selection starts with the shaft diameter and the housing bore. The common dimension order is ID × OD × width. Always state the unit in millimetres or inches. For example, a seal for a 40 mm shaft and a 62 mm bore may be written as 40 × 62 × 10 mm, but the width must be confirmed from the equipment drawing or the old seal sample.

Type codes such as TC, SC, or cassette profiles can support communication across catalogs, but the codes are not enough for interchange confirmation. Different suppliers may assign different interpretations to the same code. The section drawing, lip design, case material, and complete dimensions must be checked.

Oil Seal Material Selection

Oil seal material selection depends on the fluid, temperature range, shaft speed, and pressure. NBR works for many general mineral oil applications. FKM is selected for higher temperature oil, fuel, and chemical exposure. HNBR can provide better heat and wear resistance than general NBR. EPDM suits water and steam applications but is not suitable for most mineral oil systems. PTFE and filled PTFE are used where chemical resistance and low friction are required. Polyurethane can provide good abrasion resistance in high-wear hydraulic environments.

Material	Common Use	Selection Notes
NBR	General rotating shaft seals and mineral oil	Check temperature and additive compatibility.
FKM	High temperature oil and fuel seals	Compound selection matters for acids and steam.
HNBR	Automotive, gearbox, and high-wear oil seals	Better heat and wear resistance than many NBR compounds.
EPDM	Water, steam, and brake fluid seals	Not for most mineral oils.
Silicone	High temperature and some low-speed applications	Lower tear strength than many other sealing materials.
PTFE	Chemical service and low friction shaft seals	Shaft finish and housing design are critical.
Polyurethane	Hydraulic and high-wear rotary applications	Check high humidity and water compatibility.

This table is a general selection guide. Final material choice must be confirmed against the fluid, temperature range, shaft speed, and compound data.

For high temperature oil seal applications, FKM, HNBR, or PTFE may be suitable depending on the temperature and fluid. For chemical resistant oil seal applications, FKM or PTFE compounds are often reviewed. The final selection must match the compound data and the real operating condition.

Pre-Order Checks for Oil Seal Reliability

Oil seal failures are often caused by installation damage, shaft surface condition, excessive runout, or fluid incompatibility. Before ordering, check the shaft surface finish, shaft hardness, chamfer, housing bore condition, and lip contact area. A seal can leak early if the shaft has scoring, pitting, or excessive radial movement. A damaged lip during assembly can look like a material or design failure.

Shaft surface damage or excessive wear
Incorrect lip material for the fluid or temperature
High shaft runout or misalignment
Installation cuts or folded lips
Pressure above the seal limit without a backup ring
Overheating from dry running or high shaft speed
Housing bore damage or rough seat surface

How to Prepare a Clear RFQ for Oil Seals

A clear oil seal inquiry helps prevent quoting errors. Include the dimension order, profile, material, and application conditions. For rotary shaft seals, state the shaft diameter, housing bore, seal width, shaft speed, fluid, operating temperature range, and pressure if present. Mention whether the seal runs in oil, grease, water, or dry conditions.

Shaft diameter and housing bore
Seal width or full ID × OD × width
Lip type and seal profile
Material requirement or current material
Operating fluid and temperature range
Shaft speed and direction
Pressure and surface finish
Drawing, sample photo, and required quantity

Send the oil seal inquiry details to CORASEALS. Include the shaft diameter, housing bore, seal width, lip type, fluid, temperature range, shaft speed, surface finish, drawing or sample photo, and required quantity. CORASEALS can quote standard oil seals and custom oil seal requirements based on the application data.

Frequently Asked Questions

Is CORASEALS an oil seals manufacturer or a supplier?

CORASEALS is an industrial sealing supplier and trade partner. The company supplies oil seals from external manufacturers and can support standard and custom requirements. Buyers receive one contact point for dimensions, materials, and application data.

What is the correct way to measure an oil seal?

Measure the inside diameter, outside diameter, and width. Use the ID × OD × width order. Also record the shaft diameter, housing bore, and lip contact area. State whether the dimensions are in millimetres or inches.

Can CORASEALS supply oil seals by DIN 3760 or ISO 6194?

Yes. Standard oil seals can be sourced based on industry references such as DIN 3760 or ISO 6194. For interchangeable parts, confirm the cross-section, lip design, case material, and complete dimensions. Type codes alone are not enough.

How do I choose between NBR, FKM, and HNBR oil seals?

NBR is a general material for mineral oil seals. FKM is selected for higher temperature oil and fuel exposure. HNBR can offer better heat and wear resistance than many general NBR compounds. The final choice depends on the fluid, temperature range, shaft speed, and cost.

What details should I send to get an oil seal quote?

Send the shaft diameter, housing bore, seal width, lip type, fluid, operating temperature, shaft speed, pressure, surface finish, drawing or sample photo, and required quantity.