Industrial Seal Types and Global Supply Solutions From DEDE

From pumps, motors, gearboxes, engines, industrial machinery, robotic arms,
industrial robots, energy equipment, construction machinery, home appliances,
wind turbines, metallurgical presses, chemical plants, hydraulic systems,
agricultural machinery, water treatment units, marine vessels, high-speed rail,
trains, aircraft, automobiles to heavy trucks, seals are everywhere, each type
serving a specific role.

Common Industrial Seal Types

· O-Rings: The most common static seal, used in pump covers, valve bodies, and
hydraulic fittings. NBR resists mineral oils, FKM handles high temperature and
fuels, EPDM works with hot water and steam, VMQ suits low-temperature and clean
environments. Pressure ratings can reach tens of MPa; temperature range from
-60°C to +250°C depending on material.

· Rotary Shaft Seals: For rotating shafts in motors, gearboxes, and engines.
NBR is economical, FKM resists heat and chemicals, PTFE tolerates high speed
and short dry runs.

· Skeleton Oil Seals: Rubber lips reinforced with a metal insert for stability
and installation accuracy. Ideal for high-speed or slight shaft runout, such as
in wheel hubs and heavy-duty axles.

· Hydraulic Seals: Piston seals, rod seals, guide rings and wipers. PU offers
wear and extrusion resistance, PTFE provides low friction, NBR is versatile.
Hydraulic systems may exceed 40 MPa; bidirectional loads and micro-speed
creeping require precise des· Pneumatic Seals: Used in cylinders, actuators,
and valves. Lower pressure than hydraulics but high cycle rates. PU, NBR, and
PTFE composites are common, designed for low friction, quick response, and
sealing in dry or lubricated air.

· Combination Seals and Bonded Seals: Metal-rubber gaskets, Cassette Seals, V-
rings and others for flanges, heat exchangers, and unique motion profiles.

About DEDE

As a manufacturing-based enterprise and leader in the sealing industry, DEDE
offers a complete range of models, all available from stock, and exports to
over 80 countries. Partnering with globally recognized brands, DEDE holds
credentials such as provincial technology innovation center, specialized and
innovative enterprise, and high-tech enterprise, and leads in a specialized
industrial cluster.

Questions from Distributors and Wholesalers

· Urgent orders? DEDE keeps over ten thousand O-ring and oil seal
specifications in stock for rapid dispatch.

· Non-standard parts? From material selection and structural design to
production and testing, DEDE offers full customization to match working
conditions.

· Reducing maintenance costs? With over 30 years of experience, DEDE helps
optimize sealing systems to extend service life and reduce downtime.

In industrial sealing, choosing the right product is only the first step,
choosing the right partner ensures your equipment runs longer and more
reliably.

Minimum Order: 1000 pieces

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