Full range of Rubber Cap & Knob manufacturer in China

FBELE is mainly engaged in the development of plastic knobs and bakelite knobs. After more than 20 years of development, it has a strong R & D team, strong production capacity and strict quality management system. Its products sell well all over the country. Our main products are KYZ, Kyp, KDJ, BSK, KAP, KDC, Kaz and other models of plastic and bakelite knobs. Double circle has been adhering to the purpose of “integrity is the cornerstone, quality is life”, and is willing to create a better tomorrow with our friends!

  • Full range of sizewith different material
  • Long electricallife and mechanical life
  • 25years manufacturing experience,top 10 brand
  • high quality level,stock ready for shipment.competitive price

What is a potentiometer knob?

A potentiometer knob is an accessory that is used as a control knob for a potentiometer. They sit over the top of the potentiometer to enable easy control of electrical devices, such as audio equipment. The knobs are available in a range of materials to suit various applications.

Why Purchase FBELE Rubber Cap & Knob

Good sound quality
Free Samples

FBELE can provide free samples if the sample quantity below 5pcs is acceptable


Full range of UL TUV CUL VDE CE CCC certification,ISO9001

Strong Quality stability
High Quality Level

FBELE safe is exquisitely made of high-quality materials, with stable performance, safety and reliability


FBELE provides mold opening and customizes products according to customer drawings and samples for Rubber Cap & Knob

What is the difference between an open knob and a closed KNOB

The reason for the open knob is aesthetics,

It looks exquisite and is influenced by the aesthetics of punk period

The advantage is exquisite,

The disadvantage is that it is exposed to the air for a long time. If it is the open knob of the low-end piano, it is easy to rust, resulting in the failure of the knob and inaccurate tuning. It needs cleaning and cleaning to taste, which is more troublesome

The closed knob is that the gear is protected, with long service life, durability, easy to use and no need to clean.

However, closed knobs are recommended. Now tens of thousands of piano closed knobs are equipped with string lock, which is very exquisite, high-grade and convenient.

Rocker Switches manufacturing equipment

IP level Rubber Cap & Knob

IPX grade

The waterproof grade of electronic measuring instrument reflects the ability of moisture-proof and dust-proof of the instrument. Especially for outdoor activities, it is inevitable to be in the harsh environment of high humidity or dusty sand. The sealing and waterproof ability of the instrument is very important to ensure the safe operation and service life of the instrument. Therefore, iec529 standard is formulated internationally. In order to adapt to this, the Japanese industrial standard divides the waterproof protection of electronic instruments into 10 levels, represented by ipx1, ipx2… Respectively.

Meaning of protection class

0 unprotected

1 anti drip type I water drops falling vertically have no harmful effects

2 anti drip type II water drops falling within 15 degrees from the vertical direction have no harmful effect

  1. The rainproof type has no harmful effect on rainfall within 60 degrees from the vertical direction
  2. The splash proof type has no harmful effect due to water splashing in any direction


  1. The anti spraying type is directly sprayed by water in any direction without harmful influence
  2. Water resistant type is directly sprayed by water in any direction and will not enter the interior
  3. The anti immersion type will not enter the interior even if immersed in water under the specified conditions

8 water type can still be used after being immersed in water with certain pressure for a long time

  1. The moisture proof type can be used when the relative humidity is greater than 90%

China Leading Rubber Cap & Knob Supplier


FBELE specializes in producing and selling Rubber Cap & Knob. All products have passed UL, ENEC and other international product certification and comply with ROHS environmental protection regulations Ensure the quality of products delivered.

FBELE is a manufacturing enterprise with self-supporting import and export rights, mainly engaged in the R & D and production of a series of industrial control switches such as Rubber Cap & Knob, rocker switches, button switches,and custom switches.

FBELE has been specialized in manufacturing switches for 25 years, ship type switches,Rubber Cap & Knob, current up to 30a, waterproof switches, 100% imported American plastic raw materials and Japanese silver contacts Solve all the problems encountered by the boat switch for you

What does customer say about FBELE Company


We cooperated with FBELE since 2018,what ever time I send massage to FBELE, I allways get their quickly reply even in middle ninght in BeiJing time, it seems we have no time difference with FBELE,It’s really amazing,it really very good service!


We know FBELE in June 2021 ,we are new client,

When I first bought FBELE products, I was worried about the quality, but after receiving the first batch of trial order goods, my doubts were dispelled. FBELE product quality is very good! We will place big order this year, thanks for FBELE!

Rubber Cap & Knob banner
China Best Rubber Cap & Knob Manufacturer & Supplier

Rubber Cap & Knob produced by FBELE are of high quality and low price. They are professional manufacturers, CE and ROHS certification. They are exported to overseas, reliable quality assurance, perfect technical service and excellent performance price

FBELE Certification

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