First, the imported hole shaft with gray ring gold supplier - Taiwan Xumeike sealed XOK, your side of the high-quality supplier.
1/Selected raw materials: 100% imported, rubber from international famous brands, such as Dupont, Dow Corning, Daijin, Shinyue, Langsheng, Germany, etc. High quality rubber guarantees the sealing and quality stability of sealing products.
2/Process control: Strict control of production process, prevention in advance, process controlled and traceable afterwards.  
3/Advanced equipment: superior production vulcanization unit and high precision processing center (CNC).
4/Fine product: High precision die, the sealed products produced naturally very good, no hairy edges and convex and concave points.
5/Safety and Environmental Protection: All products meet the EU standard RoHS and have passed the SGS certification report.
6/Timely delivery: spot, 1-3 days or so; no spot, 10-15 days or so, if large volume can be urgently, 3-7 days delivery.
7/Quick response: will respond to the relevant consultation and quotation at a fast pace.
8/tailor-made: customize the products according to the special requirements of customers. If the requirement of wear resistance is particularly good, especially low temperature resistance, especially high temperature resistance and so on, the special formulation of the compound can meet the corresponding requirements.
9/intimate service: think of what customers want, really stand in the customer's perspective to see and deal with problems.
II. Import Raw Materials and Main Product Categories of Gray Rings for Import Hole Shafts
100% imported raw materials - DuPont, Daijin, Langsheng, Germany and other well-known companies provide. High quality raw materials ensure the excellent performance of sealing products. Taiwan Xumeike XOK Sealing Technology is a company specializing in providing superior imported seals.
Main products:
A, O rings: rubber O rings of various materials, mainly NBR, HNBR, FKM/VITON, EPDM, FFKM, SIL, PU, CR, PTFE, etc.
B, ED rings, star rings, rubber balls, rubber flat gaskets, retaining rings, combined gaskets, pneumatic seals and non-standard rubber sundries;
C. Cylinders: TC skeleton oil seals are the main part in stock, and other oil seals are also produced, such as Y-ring, U-ring, V-ring, Stern seal, Gray ring, dust-proof ring, water seal, etc.
3. Representation of Old and New National Standards - Imported O-ring, O-ring, O-ring
O-ring is one of the most commonly used seals. However, due to improper material selection, groove design, processing and assembly, leakage often occurs. China's national standards are GB1235-76, GB3452.1-88 and GB3452.1-92, in which the cross-sectional diameter (also known as line diameter) stipulated by GB1235-76 is 1.9, 2.4, 3.1, 3.5, 5.7, commonly referred to as the old national standard by "external diameter * line diameter"; GB3452.1-82 and GB3452.1-92 are basically the same, commonly referred to as the new national standard, which stipulates the cross-sectional diameter is 1.8, 2.65, 3.55, 5.3, etc. Conventionally, it is expressed as "inner diameter * line diameter".
When choosing O-ring, the new national standard should be chosen as far as possible. The most common use of 2.65 and 3.55 line diameters is to choose 3.55 line diameters when the outer diameter is more than 30 or so and the structure size is allowed, so as to achieve greater compression and contact area.