National Oil seal

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Oil Seal

We're professional to produce various of Rubber products with different material and have exported for 20 years.

we can provide you the all kinds of oil seal with high quality and reasonable price.

Our target is "All Customers first, Quality First, and Credit First"

This is the detail of our oil seal:

1.seal material:

NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and so on

2.seal application:

trains,automobile,motocycles,trucks,buses,agricutural machinery and any equipments

3.seal certification:

GB/T19001-2000-ISO9001: 2000 standard

4.seal production control:

prouduced by priecise CNC machine

5.seal strong point:

we have our own mold center and engineer, can develop all kinds of high tech requireds.

Powerful mold quantity in stock.

Most popular type stytle including TC, TB, SC, SBC, TBG...


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Q:Is polyurethane TPV suitable for sealing products?
The supplier of rubber material, Mr. Chen, reminds you that A polyurethane (TPU) is suitable for sealing (mainly anti-wear and oil resistant). B thermoplastic vulcanized rubber (TPV) application, 1 automobile industry, auto seal, seal series; 2, car cover, fender, ventilation pipe, buffer, corrugated pipe, air inlet pipe; 3, automobile high voltage wire. High voltage 3040KV, can meet the requirements of UL94 V0 flame retardant; consumer products 1, hand tools, electric tools, gardening equipment weeding machine parts; 2, household appliances, washer parts; handle grips 3, scissors, toothbrush, fishing rod, pneumatic equipment, kitchen supplies and other products, cosmetics, beverages, 4; food, bathroom accessories, medical equipment and other products of various types of packaging; soft parts, all 5 wheels, buzzer, pipe fittings, such as belt joint.
Q:How to choose the sealing ring according to the shaft?
According to the installation form can be divided into radial installation and axial installation. Therefore, the selection of sealing ring specifications depends on the specific circumstances. For example, for static seals, H8/f7 tolerances can be used. Please choose the O type pressure ring deformation of large size as far as possible.
Q:What is the life span of all kinds of rubber seals?
Different working conditions, the degree of wear on the seal is different, such as some seals will contact strong acid, strong alkali substances, and some have to do high-frequency reciprocating friction,
Q:What are static seals and dynamic seals?
In O type rings, the main performance is that their compression ratio can not be the same, and the groove size design can not be the same, in the case of pressure, the dynamic seal need to increase the hardness, or even use the retaining ring. According to the use of the situation, the dynamic sealing requirements of the O ring strict workmanship. In terms of material, it is only determined by working conditions.
Q:What are the better domestic rubber parts, seals ah?
If it refers to domestic, then the first must be in Anhui Ding, of course, in comparison, the price should be slightly higher
Q:Why should the hydraulic cylinder be sealed? Which parts need to be sealed? What are the common sealing rings?
The main purpose of hydraulic cylinder is to push the piston through hydraulic oil to transfer energy to the force body. If the hydraulic cylinder is not sealed, then the oil leak, usually in the piston, both ends of the cylinder has a seal (including oil seals and dust laden).
Q:Why can't polyurethane seal be used as hydraulic oil with water glycol?
Water ethylene glycol is dissolved by water (35~55%) and ethylene glycol, and is added with water-soluble thickening agent, antioxidant, rust inhibitor and anti foaming agent, etc., or propylene glycol or other polymer can be used instead of ethylene glycol
Q:All the seals in the car engines, especially those sealed in the cylinders.
Before and after the crankshaft oil seal, valve oil seal, camshaft seal, valve cover gasket, oil pad, cylinder gasket, oil pump gasket, oil cooler oil filter gasket, cushion and so on, what's the problem?
Q:What are the uses and types of seals?
Seals can be divided into two categories: static seal and dynamic seal.Static seals are mainly gasket seal, sealant sealing and direct contact sealing three categories.According to the work pressure, static seal can be divided into medium and low pressure static seal and high pressure static seal. Low and medium pressure static seals are usually made of soft and wide width gasket. High pressure and static seals are made of hard material and metal gaskets with narrow width.
Q:Can hydraulic oil be used in the mechanical seal room?
1. It has certain mechanical and physical properties, such as tensile strength, tensile strength and elongation;2, a certain flexibility, hardness appropriate, and compression permanent deformation is small;3, and the working medium to adapt to, not easy to produce swelling, decomposition and hardening;4, wear-resistant, has a certain resistance to tearing;5, with high temperature, low temperature aging performance.

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