Sponge rubber washer is a new type of seal. It is an improvement of the existing sealing ring. The existing rubber sealing rings have solid rubber body, elastic framework and tubular cavity type published in patent bulletin. The solid type has poor elasticity and is easy to lose elasticity due to aging; The structure of skeleton type is complex and its usability is poor; The tubular cavity is easy to lose its sealing function due to the cavity wall damage and air leakage. The design of foamed rubber sealing ring aims to overcome the shortcomings of the existing rubber sealing ring. It adopts the commonly used rubber foaming technology in industry, and uses the foaming process before molding and curing. In this way, a large number of closed bubbles are distributed in the rubber material of the rubber sealing ring body. It can be pressed on glass bottles, metal bottles or plastic bottles. Its chemical resistance is especially suitable for acid and alcohol products. Rubber sponge washers has been widely used in food industry, pharmaceutical industry and chemical industry. It can also be inserted into the deleted bottom pad to block the air from entering. It can be used with induction aluminum foil.
Description | neoprene sponge washers epdm sponge washers silicone sponge washers rubber sponge washwers |
Material | EPDM sponge,, NBR sponge, , SBR sponge, , CR sponge,, FKMsponge,, PU sponge, NR sponge, PVC sponge, EVA sponge and so on |
Compound material | Meet ASTM D2000 and can be UL, FDA, ROSH, REACH compliance |
Hardness | From 20 ~ 70 shore A |
Color | As per request |
Package | PE bag, Carton |
Leadtime | 8 days for sample, 12~18 days for mass product |






| FAQ |
Q 1. What's the payment term?
A: We accept T/T 50% deposit and 50% balance against copy of B/L or L/C at sight, West Union,VISA,Paypal is also accepted.
Q 2. What is the normal lead time for product orders?
A: Average lead times for prototype / first article are 7~10 days, if tooling is involved, lead time for production tooling is 10 days, average production time after sample approval is 2-3 weeks.
Q 3. what kind of certificates you have ?
A1: We have been ISO9001:2008 certified by SGS since 2019.
A2: We have various rubber compounds approved by UL, FDA, NSF, KTW, W270, WRAS, ACS, AS4020, EN681, EN549, ROHS and REACH.
Q 4:Can you supply different color materials?
A: Yes, we can produce custom molded rubber and silicone rubber products in different colors, the color code will be required in case of an order.
Q 5: What other services does Best Seal offer?
A: Best Seal has in-house tooling capabilities for molds; we have our own lab for material testing; we have a Cold Room used for elastomer storage to prolong product life.
Why choose us?
- We are constantly investing in new technology and equipment to improve our production processes.
- Our company continuously improves the production process, and strives to raise the quality of our products to a new level.
- Our focus on innovation means that we are always looking for new and better ways to serve our customers.
- We have always believed that quality is the life of an enterprise and brand is the image.
- Our experience and expertise in the industry allow us to offer our customers a level of quality and service that is unmatched.
- In the future, we will continue to stick to the main business, positioning and culture, and be oriented to meet the multi scene consumption needs of users.
- Our commitment to sustainability means that we minimize our environmental impact wherever possible.
- Relying on professional technology and equipment, we have full confidence to solemnly promise to our customers that every Sponge Rubber Washer we produce is of high quality.
- We are always looking for ways to improve our products and services to better meet the needs of our customers.
- We have been pursuing innovation and development, high quality and strict, management performance and sincere service.
Hot Tags: sponge rubber washer, China sponge rubber washer suppliers, manufacturers, factory
