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China, Chinese Wholesale Rubber Silicone FKM PFA Encapsulated O Ring¹ Industrial Products Supplier Manufacturer Details, price list catalog:

China Industrial Products Supplier Manufacturer List Catalog

Sealing Gaskets Seal Ring O Ring O Ring Seal

Shanghai Dongzhiding Rubber &Plastic Technology Co., Ltd

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Product Description Product DescriptionExcellent sealing performanceThe O-ring seal closely adheres to the sealing surface through elastic deformation, effectively preventing the leakage of liquids or gases. In static sealing applications, its compression deformation can fill minor surface unevenness and ensure high sealing performance. In dynamic seals (such as reciprocating motion or rotary seals), its flexibility allows for a certain degree of motion compensation. O-rings with reasonable material selection and design can operate stably under high pressure (static sealing can reach over 1000Bar), vacuum or corrosive medium environments, and are widely used in hydraulic systems, chemical equipment, aerospace and other fields.Diverse materialsO-rings can be made of different rubber materials to meet the requirements of various working conditions. For example, nitrile butadiene rubber (NBR) has excellent oil resistance and is suitable for both fuel and lubricating oil environments. Fluororubber (FKM) is resistant to high temperatures and chemical corrosion, making it suitable for automotive engines or chemical equipment. Silicone rubber (VMQ) has excellent resistance to high and low temperatures (-60oC to 230oC). In addition, EPDM is resistant to ozone aging, while PTFE is resistant to strong acids and alkalis. This material diversity enables O-rings to meet the requirements of different temperatures, pressures and media, making them a universal sealing solution across industries.Save SpaceO-ring seals have a compact structure and occupy very little space, making them particularly suitable for use in narrow or restricted installation environments. Its miniaturized design does not affect the sealing performance, and at the same time helps to make the equipment lightweight and compact. For instance, in precision instruments, electronic devices or micro-hydraulic systems, O-rings can provide reliable sealing performance within a limited space, while other sealing methods (such as gaskets or packing seals) may not be applicable due to their excessive volume. This advantage makes it an ideal choice for modern highly integrated devices. MaterialNitrile Butadiene Rubber (NBR)Fluororubber (FKM)ColorRed, Black, Blue, etc.CustomizedSizeStandard&CustomizedDensityTypically 0.95-1.25 g/cm3,depending on filler content(common grades: ~1.0-1.1 g/cm3).Usually 1.8-2.0 g/cm3 (high density due to fluorine content).HardnessTypically 40 - 90 Shore A, with common industrial grades at 60 - 80 Shore AUsually 50 - 90 Shore A, with high - performance grades often at 70 - 85 Shore A.Temperature-40°C to +100°C(-40°F to +212°F)-20°C to +200°C(-4°F to +392°F)ToleranceTolerance Class for Cross-Section Diameter (CSD)AS568 Class:- Small sizes: ±0.05-0.13 mm- Medium sizes: ±0.13-0.25 mm- Large sizes: ±0.25-0.41 mmTolerance Class for Inner Diameter (ID)- Small sizes: ±0.13-0.38 mm- Medium sizes: ±0.38-0.76 mm- Large sizes: ±0.76-1.52 mmTolerance Class for Cross-Section Diameter (CSD)AS568 Class:- Small sizes: ±0.05-0.13 mm- Medium sizes: ±0.13-0.25 mm- Large sizes: ±0.25-0.41 mmTolerance Class for Inner Diameter (ID)- Small sizes: ±0.13-0.38 mm- Medium sizes: ±0.38-0.76 mm- Large sizes: ±0.76-1.52 mmAdvantages1. Excellent resistance to mineral oils, fuels, and hydraulic fluids.2.Good mechanical strength and abrasion resistance.3.Cost-effective and widely available.4.Versatile for moderate temperature applications (-40°C to +120°C).1.Exceptional resistance to high temperatures (+200°C, up to +230°C for premium grades).2.Outstanding chemical resistance to acids, solvents, and fuels.3.High durability in aggressive environments (e.g., chemicals, aerospace).4.Long service life in harsh conditions.ApplicationHydraulic systemsFuel systemsAutomotive enginesOil pumpsOther general industrialequipment with oil-based mediaHigh-temperature environmentsAutomotive engines Turbochargers, gaskets Chemical processing plantsAerospace seals Applications of aggressive chemicals or fuels.Storage& Maintenance1. Regular Inspection: Periodically check the O - ring for signs of wear, such as abrasion on the surface, and aging, which may present as cracking, hardening, or discoloration. This helps to identify potential sealing issues in a timely manner.2. Timely Replacement: Replace O - rings immediately if they are damaged, deformed, or show signs of aging. A defective O - ring can no longer ensure proper sealing performance, which may lead to leaks and affect the normal operation of the equipment.3. Exposure Avoidance: Prevent O - rings from being exposed to harsh environments for extended periods. Extreme temperatures, corrosive substances, and strong oxidizing agents can accelerate the degradation of the O - ring material, reducing its service life. MaterialSilicone Rubber (VMQ)Ethylene Propylene Diene Monomer (EPDM)Polyurethane Rubber (PU)ColorRed, Black, Blue, etc.CustomizedSizeStandard&CustomizedDensityRanges from 0.96-1.25 g/cm3 (lower density than many rubbers; pure silicone: ~0.96-1.05 g/cm3).Generally 0.86-0.95 g/cm3 (one of the lowest densities among common rubbers).Hardness-dependent density: 1.1-1.25 g/cm3 for common grades.HardnessRanges from 20 - 80 Shore A, with common medical/food grades at 40 - 60 Shore A.Generally 40 - 90 Shore A, with standard industrial applications at 50 - 80 Shore A.Hardness spans 60 - 95 Shore A, often used at 70 - 90 Shore A for high - wear resistance.Temperature-60°C to +200°C(-76°F to +392°F)-50°C to +150°C(-58°F to +302°F)-30°C to +80°C(-22°F to +176°F)ToleranceTolerance Class for Cross-Section Diameter (CSD)AS568 Class:- Small sizes: ±0.05-0.13 mm- Medium sizes: ±0.13-0.25 mm- Large sizes: ±0.25-0.41 mmTolerance Class for Inner Diameter (ID)- Small sizes: ±0.13-0.38 mm- Medium sizes: ±0.38-0.76 mm- Large sizes: ±0.76-1.52 mmTolerance Class for Cross-Section Diameter (CSD)AS568 Class:- Small sizes: ±0.05-0.13 mm- Medium sizes: ±0.13-0.25 mm- Large sizes: ±0.25-0.41 mmTolerance Class for Inner Diameter (ID)- Small sizes: ±0.13-0.38 mm- Medium sizes: ±0.38-0.76 mm- Large sizes: ±0.76-1.52 mmTolerance Class for Cross-Section Diameter (CSD)AS568 Class:- Small sizes: ±0.05-0.13 mm- Medium sizes: ±0.13-0.25 mm- Large sizes: ±0.25-0.41 mmTolerance Class for Inner Diameter (ID)- Small sizes: ±0.13-0.38 mm- Medium sizes: ±0.38-0.76 mm- Large sizes: ±0.76-1.52 mmAdvantages1.Extreme temperature tolerance (-60°C to +200°C, short-term up to +260°C).2.Biocompatible and non-toxic, suitable for medical and food applications.3.High flexibility at low temperatures.Good electrical insulation properties.1.Excellent resistance to ozone, UV radiation, and weathering.2.Superior water and steam resistance.3.Low density and good electrical insulation.4.Cost-effective for outdoor and marine applications.1. Extremely high abrasion and tear resistance.2.High load-bearing capacity and mechanical strength.3.Good resistance to oils and greases (moderate compared to NBR).4.Ideal for dynamic seals in high-wear environments.ApplicationMedical devices (e.g., surgical instruments, tubing)Food processing equipmentPharmaceutical machineryHigh/low-temperature seals (e.g., oven doors, refrigeration systems)Electrical insulation.Automotive weatherstrippingWindow sealsWater supply systemsSteam pipesElectrical cablesOutdoor applications requiring ozone/UV resistance.Hydraulic cylindersPneumatic systemsConveyor beltsMining equipmentHigh-wear applications like piston seals and rod sealsStorage& Maintenance1. Regular Inspection: Periodically check the O - ring for signs of wear, such as abrasion on the surface, and aging, which may present as cracking, hardening, or discoloration. This helps to identify potential sealing issues in a timely manner.2. Timely Replacement: Replace O - rings immediately if they are damaged, deformed, or show signs of aging. A defective O - ring can no longer ensure proper sealing performance, which may lead to leaks and affect the normal operation of the equipment.3. Exposure Avoidance: Prevent O - rings from being exposed to harsh environments for extended periods. Extreme temperatures, corrosive substances, and strong oxidizing agents can accelerate the degradation of the O - ring material, reducing its service life. MaterialNatural Rubber (NR)Neoprene (CR)Polytetrafluoroethylene (PTFE)ColorRed, Black, Blue, etc.CustomizedSizeStandard&CustomizedDensityTypically 0.91-0.93 g/cm3 (low density due to hydrocarbon structure).Usually 1.2-1.35 g/cm3 (higher density than NR due to chlorine content).Approximately 2.1-2.3 g/cm3 (very high density, characteristic of fluoropolymers).HardnessTypically 30 - 70 Shore A, with common grades around 50 - 60 Shore A.Usually 40 - 80 Shore A, with typical values at 50 - 70 Shore A.Measured by Shore D durometer, approximately 50 - 65 Shore D (harder than rubber, more rigid).Temperature-50°C to +80°C(-58°F to +176°F)-30°C to +130°C(-22°F to +266°F)-200°C to +260°C(-328°F to +500°F)ToleranceTolerance Class for Cross-Section Diameter (CSD)AS568 Class:- Small sizes: ±0.05-0.13 mm- Medium sizes: ±0.13-0.25 mm- Large sizes: ±0.25-0.41 mmTolerance Class for Inner Diameter (ID)- Small sizes: ±0.13-0.38 mm- Medium sizes: ±0.38-0.76 mm- Large sizes: ±0.76-1.52 mmTolerance Class for Cross-Section Diameter (CSD)AS568 Class:- Small sizes: ±0.05-0.13 mm- Medium sizes: ±0.13-0.25 mm- Large sizes: ±0.25-0.41 mmTolerance Class for Inner Diameter (ID)- Small sizes: ±0.13-0.38 mm- Medium sizes: ±0.38-0.76 mm- Large sizes: ±0.76-1.52 mmTypically tighter tolerances due to machining accuracy:- CSD: ±0.02-0.05 mm- ID: ±0.05-0.10 mmAdvantages1. High elasticity and resilience at room temperature.2.Low permanent set (excellent recovery from deformation).3.Cost-effective for non-critical, low-stress applications.4.Good sealing performance in water-based systems.1. Good resistance to ozone, weathering, and flame retardancy.2.Moderate oil and solvent resistance.Flexible and durable in outdoor or industrial settings.3.Commonly used for general-purpose seals requiring stability.1. Unmatched chemical resistance to almost all corrosive media.2. Extremely wide temperature range (-200°C to +260°C).3. Low friction coefficient, suitable for high-speed applications.4. Non-stick surface reduces adhesion to mating materials.5. Often used as a coating or composite for enhanced performance.ApplicationGeneral-purpose seals (e.g., water taps, low-pressure systems)Latex products Agricultural machineryNon-critical applications without oil/chemical exposureWet environments (e.g., swimming pool equipmentMarine sealsIndustrial coatings Cable jacketsApplications requiring flame resistance or ozone resistanceHigh-temperature chemical pipelinesAerospace componentsSemiconductor manufacturingExtreme environments (e.g., cryogenic tanks, furnace seals)Often used as backup rings or in composite sealsStorage& Maintenance1. Regular Inspection: Periodically check the O - ring for signs of wear, such as abrasion on the surface, and aging, which may present as cracking, hardening, or discoloration. This helps to identify potential sealing issues in a timely manner.2. Timely Replacement: Replace O - rings immediately if they are damaged, deformed, or show signs of aging. A defective O - ring can no longer ensure proper sealing performance, which may lead to leaks and affect the normal operation of the equipment.3. Exposure Avoidance: Prevent O - rings from being exposed to harsh environments for extended periods. Extreme temperatures, corrosive substances, and strong oxidizing agents can accelerate the degradation of the O - ring material, reducing its service life.ApplicationMain ProductCompany ProfileShanghai DZD Seals Technology Co., Ltd. is an innovative enterprise, the main creative personnel have been engaged in the rubber sealing industry for more than ten years. Specializing in the design, production,sales and service of seals,we are committed to providing sealing components that meet the requirements of power and transmission parts and leak-proof sealing parts of various industrial customer products through innovative research and development and customized solutions, and continuously improve customer products. At the same time, in order to meet the requirements of customers for continuously improving performance, DZD has carried out continuous and long-term R&D investment in the fields of new materials, sealing components and sealing systems.DZD main products are: sealing rings in the hydraulic industry, sealing rings in the pneumatic industry, sealing rings in the valve industry, sealing rings in the automotive industry, sealing rings in the engineering machinery industry, sealing rings in the petroleum industry, etc. We can also tailor-made for customers according to customer requirements. Customized products have provided advanced and reasonable sealing solutions for many customers. The seal products produced by DZD are widely used in furniture, home appliances, hydraulic pressure, pneumatic, engineering machinery, automobiles pump valves, motors and other industries.DZD will follow the trend of the times, insist on providing satisfactory products, prices and services, and will be more than happy to provide assistance at any stage of your plan to grow together as an industry leader.Our AdvantagesCertificationsAfter Sales ServicePackaging & ShippingFAQQ1: Do you support OEM or ODM?A: Yes, we are factory, and we have a professional team can customize color, material and sizes.Q2: Do you supply samples?A: Yes, for standard materials and sizes (not included freight).Q3:What after-sales service do you have?A: We can provide technical support for any problems in use.Q4: What is your packaging?A: The goods usually packing in PE bags inside and carton box outside. Special packing method can be accepted when needed.Q5: What is your payment terms?A: Payment ≤$5000, 100%T/T in advance, payment >$5000, 50%T/T in advance, balance before shipping. Please feel free to ask if you have any questions. We're happy to provide any information or help.

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