Which rubber seal can I choose?

Rubber seal is a seal produced from rubber. It is mainly used in automobiles, machinery, doors and windows, etc. It plays the role of dustproof, insect-proof, waterproof, fixed, sound insulation, shock absorption, sealing and so on. It can be seen that rubber seals are widely used in our life, so how to choose rubber seals?

First of all, let's understand the product characteristics of rubber sealing strip:

1, light weight, expansion and contraction strength, non-absorbent (alternative to the traditional three oil four felt, asphalt wood fir board and other materials). Product environmental protection, easy construction, seepage control, leakage control, water stopping effect is good.

2, corrosion-resistant, ageing-resistant, high and low temperature resistance +80 ℃ ~ -45 ℃ does not flow, does not deform, not brittle crack, long service life.

3, with an independent open bubble structure, the appearance of the special type of joint plate for the honeycomb holes evenly distributed, without the need to play the hair can be tightly bonded with the cement/sealant fusion, to adapt to the natural expansion and contraction changes in the change, to enhance the effect of joint sealing expansion of the water stop.

Vulcanised EPDM rubber sealing strip:

In the sealing elasticity and durability than the PVC rubber strip has been greatly enhanced, but due to the need for microwave vulcanisation line shaping, processing energy consumption is high, usually more than 20 times the processing of PVC, the product can not be reused, not environmentally friendly, is not a national advocacy of the product. In addition, the specific gravity of the material of such products (more than 1.4) and PVC class is comparable (low-end vulcanisation of EPDM adhesive tape specific gravity is even greater) out of the window rate is about the same as the PVC adhesive tape, the use of the relatively high cost of Windows and Doors enterprises are difficult to accept.

The seal is a new material developed in recent years on the basis of technology introduced from abroad and domestic independent research and development, mainly used for automotive door and window seals, and in recent years began to be used for building door and window seals. Its outstanding advantages are:

1. The performance and service life are comparable with vulcanised EPDM rubber sealing strip.

2. Processing energy consumption is relatively low compared to vulcanised EPDM rubber strip (comparable to PVC).

3. Does not contain halogen and lead and other heavy metals, plus a number of years after the recycling, in line with the requirements of green building materials.

Small specific gravity (only 0.9-0.95), high window rate. It seems that the purchase unit price is high, but the actual use cost is low.

Modified PVC adhesive strip price is relatively low, due to the quality of the quality varies, the price is generally between 6000 yuan 15000 yuan / tonne. Seal strip low-end products due to the use of waste materials, plasticisers and high filler, to make the rubber strip poor elasticity, easy to harden, pungent smell, easy to migrate to make the frame material yellowing, short service life. A small number of doors and windows at a low level of price competition is still in use. In the PVC adhesive tape can meet the standard indicators, the service life is relatively long.