Abstract

We promise our factory will use 100% new materials that meet RoHS’s directive. Upon request, we can provide Custom Compounding, such as anti-fire,food-grade, etc.

RubberMaterial

EPDM Rubber

We promise our factory will use 100% new materials that meet RoHS’s directive. We also could provide Custom Compounding such as anti-fire,food-grade, etc., upon request.

CR Rubber

Temperature range: -30 to +90℃. Hot water is not recommended.

Advantages: It has good thermal resistance to aging, weather, and ozone, low flammability, high resistance to alternating bending, medium resistance against oil (higher than NR, lower than nitrile rubber), good mechanical properties, and elasticity. However, it is better than NR. It has small deformation remains.

Disadvantages: According to the type of CR-Type, cry stabilization is possible due to a lasting cold.

NBR

Temperature range: -20 to +100℃ with dry conditions, hardens with hot air, oils Up to+120℃, water up to+80℃.

Advantages: It is highly resistant to oil, petrol, and thermal, has good mechanical toughness, and has low remaining deformation under pressure.

Disadvantages: It has very low weather and ozone resistance and low elasticity.

Natural Rubber(NR)

Temperature range: -40 to +70℃.

Advantages: It has good elasticity and mechanical properties(tear and abrasion resistance, toughness, elasticity). It does not remain deformed after strain and is highly resistant to alternating bending.

Disadvantages: It is medium to low-resistant to oil, weather, and ozone, as well as thermal resistance and flammability.

Silicone Rubber

Temperaturerange: -50 to +230℃

Advantages: It has an extreme temperature range and low-temperature flexibility. It is nonpoisonous and tasteless.

Disadvantages: It has poor tensile strength, tear, and abrasion resistance.

Plastic Material

TPE

Temperature range: -60 to +130℃.

Advantages: It can be processed as quickly as thermoplastics and has the most essential properties of rubber. It’s elastic, supple and flexible. TPE is No risk to the environment. In contrast to rubber, they can be recycled And re-processed. It’s easy to be colored at a lower cost.

PVC

Temperature range: -40 to +70℃.

Rubber Extrusions Process

The process of polymer extrusion involves taking raw materials and creating a product that can be formed into a unique profile of a variety of lengths, shapes and colors. The profiles are highly customizable and can be made from almost any type of rubber. There are two processes for rubber extrusion; continuous in-line cure and off-line cure.

We promise that our factory use 100% new material Which Meet directive of RoHS and also could provide Custom Compounding such as anti-fire,food-grade, etc upon request.

Continuous in-line cure extrusion

In this process the heated rubber is driven through a die in a uniform stream and travels through a ‘curing tunnel’ that raises the product to the appropriate vulcanizing temperature and maintains that temperature until the curing process is complete. There are multiple methods that can be used to form the ‘curing tunnel’ including; high velocity hot air, microwave ovens, hot liquid curing medium (LCM) or a fluidized bed of glass Ballotini beads. The length of the tunnel is taken into consideration along with the speed to calculate the temperature throughout the vulcanizing process. As the cured rubber exits the tunnel it is moved into a cooling channel where the rubber is cooled and residue is removed. The speed at which the product travels through the cooling channel is facilitated by a puller at the end of the line to maintain overall stability.

Some of the advantages of continuous curing are; the ability to produce unbroken lengths, increased manufacturing speed, minimal labor, and efficient uses of energy and space. This process also allows for the combination of multiple materials.

This process does have some limitations. Typically the cost of raw materials is higher, and there can be size and shape limitations.

Extrusion

Our rubber extrusions include profiles and tubing, cut washers, and gaskets. With our state-of-the-art manufacturing facility, loacted in China., we provide extruded rubber manufacutring for a range of products, including:

Vulcanized spliced gaskets

Gaskets with molded or injection molded corners

Simple and complex shaped seals, washers and gaskets

Strips, cord and seals in long lengths on reels or coils, or as cut lengths

Holes, notches, and special cut-outs can be fabricated into our extruded products

We are able to extrude a variety of materials, including SBR, Neoprene and EPDM.

Our experienced staff has the industry and application expertise to manufacture your custom part to exacting specifications, ensuring that we will manufacture your part right the first time and deliver it on time . Call today to see how we can be of assistance.

Manufacturing Tolerance

The purpose of the subsequently compiled tolerances from there spective standard is to facilitate the quick assignment of tolerated dimensional deviations.

Not applicable to drawings with fixed tolerances.

Soild and soft rubber profiles(sections) based on DIN ISO 3302-1E2

Nominal range in mm +/- mm
  ≤ 1.5 0.25
1.5 to 2.5 0.35
2.5 to 4 0.4
4 to 6.3 0.5
6.3 to 10 0.7
10 to 16 0.8
16 to 25 1
25 to 40 1.3
40 to 63 1.6
63 to 100 2

Sponge rubber profiles profiles(sections) based on DIN ISO 3302-1 E3

Nominal range in mm +/- mm
  ≤ 1.5 0.4
1.5 to 2.5 0.5
2.5 to 4 0.7
4 to 6.3 0.8
6.3 to 10 1
10 to 16 1.3
16 to 25 1.6
25 to 40 2
40 to 63 2.5
63 to 100 3.2

Sponge rubber profiles profiles(sections) based on DIN ISO 3302-1 E3

Nominal range in mm +/- mm
  ≤ 6.3 0.5
6 to 10 0.7
10 to 16 0.8
16 to 25 1
25 to 40 1.3
40 to 63 1.6
63 to 100 2.0
100 to 160 2.5
160 to 63 1.5%

Toler for custom lengths(rubber) based on DIN ISO 3302-1 L3

Nominal range in mm +/- mm
  ≤ 40 1.6
40 to 63 2
63 to 100 2.5
100 to 160 3.2
160 to 250 4
250 to 400 5
400 to 630 6.3
630 to 1000 10
1000 to 1600 12.5
1600 to 2500 16
2500 to 4000 20
4000 to   0.005

Toler for custom lengths(rubber) based on DIN ISO 3302-1 L3

Nominal range in mm +/- mm
  ≤ 3 0.4
3 to 6 0.6
6 to 10 0.7
10 to 18 0.8
18 to 30 1
30 to 50 1.2
50 to 80 1.5
80 to 120 1.9
120 to 180 2.3
180 to 250 2.8
250 to 320 3.5
320     1.4%

Toler for custom lengths(rubber) based on DIN ISO 3302-1 L3

Nominal range in mm +/- mm
  ≤ 400 5
400 to 1000 10
1000 to 2500 20
2500 to 6000 30
6000 to   2%