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What are the testing standards for sealing rings of rubber products?

Release time:

2019-06-12 12:30

Source:

rubber productsSealing ringWhat are the testing standards?
 
Rubber sealing ring is a processing product of machinery and equipment industry. Each line has its own quality inspection standard to define whether the product is qualified. Have you ever understood the inspection standard of rubber seal ring? What are the inspection standards of appearance quality of rubber seal ring? The appearance inspection standard of o-ring (referred to as o-ring) includes the shape, characteristics and size of o-ring defects, classification of surface defects and specified requirements.
 
Appearance quality inspection standard number of 1. O-ring rubber sealing ring: GB3452.2-87
 
The letter symbol of the 2. appearance quality inspection standard represents: ● d1 represents: the inner diameter of the o-ring. ● d2 stands for: diameter of o-ring section. ● e represents: misaligned dimensions. ● f represents: height and width of the extension after trimming convex. ● I represents: excessive trimming width. ● g stands for: open mold shrinkage crack width. ● h represents: the depth of mold opening shrinkage. ● j represents: the length of the flow mark (only allowed in the circumferential direction). ● k represents: depth of flow mark (only allowed in circumferential direction). ● l represents: concave, convex defect length, width. ● m represents: depth and height of concave and convex defects.
Grade description of 3. appearance quality inspection standard quality: ● N grade (general grade): suitable for general use. ● S-level (higher level): applicable to occasions where the appearance quality requirements of heaven and earth are relatively high. ● NZ grade and SZ grade (special grade): choose up to three types of defects in N grade or S grade, and specify higher appearance quality requirements, called NZ grade or SZ grade, which shall be agreed by both parties.
 
4. Appearance Quality Inspection Standard Quality Appearance Quality ● Dimensions: The dimensions and tolerances of O-ring finished products shall conform to GB3452.10-"Dimension Series and Tolerance of Hydropneumatic O-ring Rubber Sealing Ring" or relevant national standards. ● General requirements: the o-ring is not allowed to have pores, cracks, bubbles; the surface should be smooth, clean, surface defects should not exceed the specified limits. ● Surface defect: the type of surface defect of the o-ring and its quality requirements shall meet the requirements in the table. The maximum allowable limit of surface defects of o-type rubber sealing ring.

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More information

What is the difference between silicone plug and rubber plug

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What are the fields of application of silicone keys for equipment

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The convenience of the use of industrial silicone buttons

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What are the molding techniques of rubber products?

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How to print the pattern on the transparent key

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