English
banner (1)

Screw with O Ring - China Manufacturer for Quality Fasteners

I am a China-based Manufacturer and I know what busy buyers need when sourcing reliable sealing solutions. Our screw with o ring is engineered for tough environments, delivering leak-free performance in hydraulic, pneumatic, and outdoor fittings. Each piece uses high-strength steel and a precisely machined groove to seat the O-ring firmly, resisting rotation and vibration. I offer a range of sizes and thread types to fit your application, with standard materials or customized coatings to resist corrosion. For OEM or ODM projects, I can tailor grip depth, clamp load, and o-ring material (Nitrile, Viton, etc.) to meet your spec. I ship fast, with consistent QC checks and packaging designed for easy inventory integration. If you are a procurement professional in search of dependable screw with o ring solutions from a trusted China Manufacturer, I can support you from sample to full-scale production and after-sales service.

Hot Selling Product

screw with o ring Application Industry Leaders

Across electronics, medical devices, automotive, and heavy machinery, screws with O-rings provide dependable seals where space is tight and performance is mission-critical. Industry leaders align precision machining with elastomer science to create fasteners that seal under vibration, temperature shifts, and chemical exposure. The secret lies in integrating the seal into the fastener geometry—groove depth, O-ring cross-section, and seating surface—so the seal and the thread work together under expected loads, whether static or dynamic. For global buyers, success starts with a clear understanding of service conditions: temperature, pressure, moisture, and chemical exposure. Select O-ring materials accordingly (FKM for high heat and oils, NBR for general use, EPDM for water contact, or specialty grades for aggressive fluids). Ensure correct groove design, lubrication, and torque to prevent extrusion or damage. Request complete material data sheets, compliance certificates, and performance tests (leak, temperature cycling, and vibration). Favor suppliers with traceability, reliable lead times, and robust quality systems to ensure consistent performance across markets.

{ screw with o ring Application Industry Leaders}
Industry Sector Application Type Screw Size (mm) Material O-Ring Material O-Ring Size (ID x CS) mm Seal Arrangement Surface Finish (Ra μm) Operating Temp (°C) Operating Pressure (bar) Standards Typical Use
Automotive Engine Timing Cover M8 x 1.25 Stainless Steel 304 (AISI 304) FKM (Viton) 24 x 2.5 Single Ra 0.8 -40 to 150 0-40 ISO 898-1; ISO 3601 Sealing and fastening in engine compartments
Aerospace Access Panel Fastening M6 x 1.0 Nickel-based alloy (aerospace grade) FKM 15 x 2 Double Ra 0.4 -55 to 200 0-80 ISO 898-1; ISO 3601 Panel seals in environmental enclosures
Oil & Gas Flange Connection Screws M12 x 1.75 Duplex Stainless Steel HNBR 35 x 4 Double Ra 0.8 -30 to 260 0-120 ISO 10418; ISO 3601 High-pressure seals in subsea equipment
Food & Beverage Equipment Lids M8 x 1.25 316L Stainless Steel EPDM (FDA) 20 x 3 Double Ra 0.5 -20 to 120 0-25 FDA; 3-A Sanitary Sanitary equipment closures
Pharmaceutical Fill/Seal Chambers M10 x 1.5 316L FKM USP VI 28 x 2.5 Single Ra 0.4 -40 to 150 0-60 USP Class VI; FDA Sterile processing equipment
Chemical Processing Reactor Vessels M10 x 1.5 Alloy Steel FKM 40 x 4 Double Ra 0.7 -20 to 180 0-80 ISO 9001; ISO 13784 Corrosion-resistant assemblies
Water Treatment Valve Assemblies M8 x 1.25 Stainless Steel 304 NBR 18 x 2 Single Ra 0.6 -10 to 90 0-40 ISO 9001 Water filtration system connectors
HVAC Duct Fittings M6 x 0.75 Stainless Steel 304 FKM 16 x 2 Double Ra 0.5 -30 to 150 0-25 ISO 9001; DIN 267 Sealed duct assemblies

Related Products

torx pan head screw with captive washer

countersunk torx Anti Theft Security sealing screw with o ring

Read More
IMG_9551

China Slotted Sealing Screw with O-Ring

2self-sealing-screw-truss-head-slot-with-or-o-ring

Truss head slotted sealing screw with o ring

13.6

china manufacturing nylock patch screw with shoulder

IMG_4751

hexagon waterproof screw with o ring sealing screw

166A0300

Stainless Steel Carbon Steel SEMS Combination Screws With Flat Spring Washers Multiple Head Custom Fasteners

IMG_4738

Pan Head Cross Recess Waterproof Shoulder Screw With O Ring

banner (3)

screw with o ring Supplier Sets the Industry Standard

O-Ring Seal Integrity Index Across Operating Conditions

Explanation

Explanation: This visualization presents a data-driven view of how an o-ring seal's integrity responds to temperature variations under different surface finishes, quantified as an integrity index from 0 to 1. The data are synthetic but aligned with real-world physics: higher temperatures generally reduce material stiffness and lubricant viscosity, increasing wear and creep, which can cause leaks under pressure. Surface roughness affects the contact area and the local pressure distribution, magnifying degradation when roughness is higher. The chart uses three lines representing roughness classes Ra 0.2 μm (very smooth), Ra 0.6 μm (moderate roughness), and Ra 1.0 μm (rough). The x-axis shows operating temperature in degrees Celsius, spanning typical cold-start to hot-operating conditions (-20 to 100 °C). The y-axis shows the Seal Integrity Index, a normalized metric where 1 is perfect sealing and values closer to 0 indicate elevated failure risk. From the data, several insights emerge. First, temperature has a strong, nonlinear effect on integrity, particularly at higher roughness. The Ra 0.2 line remains above 0.6 until about 60 °C and stays above 0.4 up to 100 °C, indicating robust performance for smooth finishes. In contrast, Ra 1.0 deteriorates rapidly, crossing below 0.5 around 60 °C and approaching 0.25 near 100 °C, signaling substantial failure risk in hot environments without improved finish or different material. The Ra 0.6 line lies between these extremes, providing a mid-range expectation. These patterns reflect the interaction between thermal expansion, compression set, and lubrication film stability. Practically, this chart can inform supplier qualification and engineering decisions. It helps set minimum viable integrity thresholds across the anticipated temperature window, guides material selection (e.g., choosing lower roughness surfaces or more temperature-tolerant elastomers), and supports the development of standard testing protocols to benchmark candidate O-ring grades. By visualizing how small changes in surface finish combine with temperature, teams can reduce field failures, improve interchangeability, and align on consistent industry standards for seal performance.

Top Selling Products

  • Related Blog
  • Reviews
  • Reviews

  • Kitty 2022.12.21 18:36:25

    As a veteran of this industry, we can say that the company can be a leader in the industry, select them is right.

  • Priscilla 2022.12.19 03:49:43

    The supplier abide the theory of quality the basic, trust the first and management the advanced so that they can ensure a reliable product quality and stable customers.

  • Ada 2022.12.16 11:32:24

    On this website, product categories is clear and rich, I can find the product I want very quickly and easily, this is really very good!

  • Kama 2022.12.08 05:33:26

    The factory workers have a good team spirit, so we received high quality products fast, in addition, the price is also appropriate, this is a very good and reliable Chinese manufacturers.

  • Betsy 2022.12.03 10:12:09

    Speaking of this cooperation with the Chinese manufacturer, I just want to saywell dodne, we are very satisfied.

  • Amy 2022.12.02 19:39:43

    This company has a lot of ready-made options to choose and also could custom new program according to our demand, which is very nice to meet our needs.

  • Phoebe 2022.12.21 23:42:48

    This is the first business after our company establish, products and services are very satisfying, we have a good start, we hope to cooperate continuous in the future!

  • Madeline 2022.12.20 21:35:59

    This is a very professional and honest Chinese supplier, from now on we fell in love with the Chinese manufacturing.

  • Mildred 2022.12.16 11:41:11

    This supplier offers high quality but low price products, it is really a nice manufacturer and business partner.

  • Mandy 2022.12.16 01:57:15

    Products and services are very good, our leader is very satisfied with this procurement, it is better than we expected,

  • Honorio 2022.12.10 23:55:06

    This company can be well to meet our needs on product quantity and delivery time, so we always choose them when we have procurement requirements.

  • Candy 2022.12.05 20:02:03

    Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.

related search

Hit enter to search or ESC to close