Chemical Resistant VITON/FKM Sealing Ring USP Grade O-Ring

Company Introduction:

Bomingyang Technology Co., Ltd., located in Xi'an, Shaanxi Province, is a technology-driven enterprise specializing in the research, development, production, and sales of rubber seals. The company primarily manufactures various rubber sealing products, including O-rings, X-rings, Y-rings, flat washers, V-rings, ED rings, C-rings, rubber strips, rubber balls, rubber retaining rings, and miscellaneous rubber parts. With a corporate mission of "creating value for customers and wealth for employees," the company adheres to the principles of continuous innovation, stable quality, and ongoing improvement since its establishment. Dedication and integrity are the driving forces behind our constant progress. As a professional manufacturer and supplier of high-quality sealing products, the company builds its foundation on quality and service, guided by customer needs, and continuously enhances R&D capabilities and production process iterations to meet the ever-changing market demands. Every employee at Bomingyang Seals is committed to the quality of each product, providing the industry with reliable sealing products and professional services. To improve product quality and ensure our products meet market and customer requirements in today's highly competitive market, "Quality first, customer first" is our quality policy; "Pursuit of customer satisfaction, exceed customer requirements" is our quality commitment. With a diligent and pragmatic spirit, as well as integrity and a down-to-earth approach, we hope to collaborate with your company and create a bright future together.

Product Description:

Custom Processing: Yes 

Material: Fluoroelastomer (FKM)

Cross-Section Shape: O-type / Special-shaped dimensions

Function: Fixed sealing 

Performance: High temperature resistance, high pressure resistance, corrosion resistance, wear resistance 

Temperature: 300 ℃ Operating Pressure: 100 MPa

Introduction to Fluoroelastomer Seals:

Fluoroelastomer is a copolymer of vinylidene fluoride and hexafluoropropylene. Depending on its molecular structure and fluorine content, the chemical resistance and low-temperature performance of fluoroelastomer vary. Fluoroelastomer is renowned for its excellent flame retardancy, superior airtightness, high temperature resistance, ozone resistance, weather resistance, oxidation resistance, resistance to mineral oils, fuel oils, hydraulic oils, aromatic compounds, and many organic solvents and chemicals.

For general grades, the static sealing temperature range is approximately -26°C (-15°F) to 282°C (450°F). Although it can be used briefly at temperatures up to 295°C, exceeding 282°C will shorten its service life. For dynamic sealing, the suitable temperature range is between -15°C and 280°C, with a low-temperature limit of -40°C.

Hardness: Between 50 and 90 degrees (Shore A).

Color: Black, blue, green, brown.

Abbreviation:   FKM/FPM

Applications: Automotive, doors and windows, electrical appliances, bearings, pumps, cylinders, rollers, water pipes, chemical pipelines, valves 

Precautions for Using FKM (VITON) Fluoroelastomer O-Rings

Fluoroelastomer possesses exceptional physical and chemical properties, including high temperature resistance, oil and wear resistance, chemical corrosion resistance, and excellent aging and ozone resistance. It can operate at temperatures up to 200°C or below, allowing for short-term operation without oil. Even under extremely harsh conditions, it maintains excellent wear resistance. FKM O-rings made from DuPont VITON raw materials exhibit even more outstanding performance. Under normal working conditions and temperatures below 220°C, fluoroelastomer is very stable and harmless. However, when exposed to temperatures above 300°C, such as from a gas cutting torch flame, fluoroelastomer can release harmful gases. Inhaling these gases or getting them into the eyes can be harmful to health. Therefore, it is essential to avoid significantly exceeding the normal operating temperature when using fluoroelastomer seals.

FKM (VITON) Fluoroelastomer O-Rings

We know that seals rely on deformation under external force to generate rebound force for sealing. The elasticity and tensile strength of rubber are crucial indicators of seal quality. XOK Seals from Taiwan uses imported rubber materials and advanced production processes to ensure high elasticity and excellent tensile strength of the seals. Rubber elasticity is generally measured by rebound rate, sometimes also by elongation and permanent deformation; imported materials have high elongation, low permanent deformation, and high elasticity. High elasticity is mainly related to molecular weight, conformational entropy of coiled molecules, crosslink density of vulcanized rubber, and the type of crosslinks. Higher molecular weight contributes to better elasticity. Moderate crosslinking can reduce or eliminate molecular chain slippage, further enhancing elasticity. Additionally, polysulfide bonds with lower bond energy and less restraint on molecular chain movement tend to offer better rebound elasticity.

Stretching and Compression of FKM (VITON) Fluoroelastomer O-Rings

Stretching and compression are the two basic forms of O-ring installation in grooves. The compression force is determined by the initial deformation degree of the O-ring and the hardness of the sealing material. XOK Seals from Taiwan uses top-quality imported rubber materials, fundamentally ensuring various parameters of the sealing products, including excellent stretching and compression indices. When used as "internal circle sealing," the maximum circumferential compression should be 1%. Exceeding this limit will affect the service life of the rubber ring. When used as "external circle sealing," the inner diameter after stretching should be larger than the outer diameter of the groove, with a maximum elongation of 3% (for inner diameter >50mm) or 5%. If the pressure comes from the inside, the outer diameter of the seal should contact the outer diameter of the groove (with circumferential compression less than 1%). If the pressure comes from the outside, the inner diameter of the rubber ring should contact the inner diameter of the groove, with a maximum allowable stretch of 3%.

After-Sales Service:

All company products come with material certification; sincerity wins trust, patience gains understanding; details determine success or failure, service creates value. Service must be integrated throughout the entire enterprise, not limited to the final after-sales stage. Customized packaging and shipping methods are available based on customer requirements to meet different clients' cleanliness standards for products.  Whenever you need, we are ready to provide satisfactory products. If we have the honor of becoming your supplier, you can rest assured in terms of professionalism, quality, delivery, and service. Cooperating with us will make us a reliable and hassle-free qualified supplier for you.