California stands as a hub for industrial activity in the United States, boasting a plethora of suppliers specializing in O-rings. Here’s a detailed comparison of some of the top companies in the state offering O-ring products and services:

Comparative Table

Company Name Location Primary Products & Services Key Features Website Link Santa Ana, CA Various sealing products including O-rings, mechanical seals, gaskets Extensive product line, high-quality O-rings
EMI Conductive Rubber, LLC Brea, CA Conductive rubber O-rings, D-rings, connector gaskets Specializes in conductive rubber products
Pacific States Felt & Manufacturing Company Hayward, CA Various gasket materials including non-asbestos, rubber, EPDM Wide selection of gasket materials
Parco, Inc. Ontario, CA O-rings and high-performance seals First manufacturer to specialize in O-rings
California Sealing Solutions Irvine, CA Metal stampings, mechanical metal parts, rubber extrusions, plastic injection molding, pump repair kits, custom molded rubber, O-rings Offers custom parts and sealing components
All Seals Inc. Lake Forest, CA Rod seals, piston seals, wipers, guide rings, O-rings Customizable O-ring sizes and materials
Royal Seals, Inc. Upland, CA Precision spliced vulcanized O-rings and extrusions, O-rings and cords, custom molded rubber and plastic components 75 years of industry experience
San Diego Seal, Inc. San Diego, CA Various sealing products including rod seals, piston seals, wipers, guide rings, O-rings 45 years of gasket expertise
Transply, Inc. York, PA Full range of industrial products from AC Tech inverters to Zero-Max motion control products Specializes in power transmission products

Detailed Company Overviews offers a wide range of sealing products, including O-rings, mechanical seals, and gaskets. Their extensive product line ensures that customers can find the exact sealing solution they need. The company is known for its high-quality O-rings, which are essential for various industrial applications.

EMI Conductive Rubber, LLC:
Located in Brea, CA, EMI Conductive Rubber specializes in conductive rubber products. They cater to the aerospace, electronics, and medical industries, providing advanced shielding materials. Their primary products include conductive rubber O-rings, D-rings, and connector gaskets.

Pacific States Felt & Manufacturing Company:
Based in Hayward, CA, Pacific States Felt & Manufacturing Company offers a variety of gasket materials. Their products are used to fill the space between two objects, preventing leaks between the surfaces. They provide materials such as non-asbestos, rubber, EPDM, and more.

Parco, Inc.:
Parco, Inc., located in Ontario, CA, is a leading manufacturer of O-rings and high-performance seals. Established in 1941, they were the first manufacturer to specialize in O-rings, which remains one of their primary products.

California Sealing Solutions:
Situated in Irvine, CA, California Sealing Solutions produces both standard and custom parts. They offer a range of industrial products, especially in the realm of power transmission. Their products and services include metal stampings, mechanical metal parts, rubber extrusions, and more.

All Seals Inc.:
All Seals Inc. specializes in sealing products. They offer a variety of seals, including rod seals, piston seals, wipers, guide rings, and notably, O-rings. They can customize the size and material of O-rings based on the application.

Royal Seals, Inc.:
Royal Seals, based in Upland, CA, caters to the fluid sealing distribution market. With over 75 years of combined industry experience, they have successfully addressed engineering challenges in various sectors, including transportation, glass, solar, semiconductor, petrochemical, and more.

San Diego Seal, Inc.:
San Diego Seal, Inc., located in San Diego, CA, has been in business since 1978, providing a range of products and materials for both the government and commercial sectors. They offer various sealing products, with over 45 years of expertise in gaskets.

Transply, Inc.:
Transply, Inc., based in York, PA, offers a full range of industrial products. Founded in 1972, they specialize in power transmission products, supplying renowned brands like ABB/Baldor, Boston, Continental, and more.

Does these companies are manufacturers?

  • offers a variety of sealing products, including O-rings. However, it appears more as a distributor rather than a manufacturer.
  • EMI Conductive Rubber, LLC manufactures conductive rubber O-rings and other related products.
  • Pacific States Felt & Manufacturing Company provides various gasket materials, but it wasn’t explicitly mentioned if they manufacture O-rings.
  • Parco, Inc. is a manufacturer of O-rings and high-performance seals.
  • California Sealing Solutions offers products related to O-rings, but they seem to provide a range of sealing solutions more broadly.
  • All Seals Inc. offers O-rings and other sealing products, but it wasn’t explicitly mentioned if they are manufacturers.
  • Royal Seals, Inc. provides O-rings and other related products.
  • San Diego Seal, Inc. offers various sealing products, including O-rings, but it appears more as a distributor or supplier.
  • Transply, Inc. primarily offers industrial products, especially in the realm of power transmission, without explicit mention of manufacturing O-rings.

So, not all of these companies are O-ring manufacturers. Some might be distributors or suppliers of O-rings rather than directly manufacturing these products. If you wish to determine which companies are indeed manufacturers, further in-depth research or direct contact with these companies for more accurate information might be necessary.

FAQ: O-Ring Suppliers in California

Q1: What are O-rings?
A1: O-rings are doughnut-shaped or torus-shaped rings, typically made from elastomers, used primarily for sealing purposes in machinery and equipment.

Q2: Are all the listed companies manufacturers of O-rings?
A2: Not all. While some companies like Parco, Inc. and EMI Conductive Rubber, LLC manufacture O-rings, others like and San Diego Seal, Inc. appear to be distributors or suppliers.

Q3: Which company specializes in conductive rubber O-rings?
A3: EMI Conductive Rubber, LLC specializes in conductive rubber O-rings and related products.

Q4: Are custom O-ring solutions available from these suppliers?
A4: Yes, many of these companies, such as California Sealing Solutions and All Seals Inc., offer customizable O-ring sizes and materials based on specific applications.

Q5: Which company has been in the O-ring business the longest?
A5: Parco, Inc. has a long-standing history, having been established in 1941, making it one of the pioneers in O-ring manufacturing.

Q6: Can I get other sealing products apart from O-rings from these suppliers?
A6: Absolutely. Many of these companies, like and San Diego Seal, Inc., offer a wide range of sealing products, including mechanical seals, gaskets, wipers, and guide rings.

Q7: Which company offers expertise in gasket materials?
A7: Pacific States Felt & Manufacturing Company provides a variety of gasket materials, including non-asbestos, rubber, and EPDM.

Q8: Are there suppliers that cater specifically to the aerospace or electronics industries?
A8: Yes, EMI Conductive Rubber, LLC caters to the aerospace, electronics, and medical industries, providing advanced shielding materials.

Q9: How can I determine the best O-ring supplier for my needs?
A9: It’s essential to assess your specific requirements, such as the type of O-ring, material preference, quantity, and budget. Then, review the offerings of each company, their expertise, and customer reviews to make an informed decision.

Q10: Can I get technical support or consultation from these suppliers?
A10: Many of these companies offer technical support and consultation services. For instance, San Diego Seal, Inc. boasts over 45 years of gasket expertise and provides technical support to its clients.

Remember, when choosing an O-ring supplier, it’s crucial to consider not just the product’s cost but also the quality, reliability, and the company’s reputation in the market.

Choosing the right O-ring supplier in California is crucial for ensuring the quality and reliability of the products you receive. Here’s a step-by-step guide to help you make an informed decision:

How to choose O-Ring Suppliers in California

1. Determine Your Needs:

  • Type of O-ring: Understand the specific type of O-ring you need. This could be based on material (e.g., silicone, nitrile, Viton), size, or application.
  • Volume: Estimate the quantity you’ll require. Some suppliers might cater to bulk orders while others might be more suited for smaller quantities.
  • Customization: Determine if you need standard sizes or custom-made O-rings.

2. Research Potential Suppliers:

  • Online Search: Start with a simple Google search to identify suppliers in California.
  • Industry Publications: Look for industry-specific directories or publications that list suppliers.
  • Recommendations: Ask colleagues or industry peers for recommendations.

3. Check Credentials and Certifications:

  • Ensure the supplier adheres to industry standards and has necessary certifications, such as ISO certifications, which indicate quality management practices.

4. Evaluate Product Range:

  • A diverse product range often indicates extensive industry knowledge. Check if the supplier offers other sealing products, which can be beneficial for future needs.

5. Ask for Samples:

  • Before placing a large order, request samples to assess the quality and suitability of the O-rings for your application.

6. Consider Pricing:

  • While pricing is essential, it shouldn’t be the only factor. Sometimes, cheaper products might compromise on quality. Always balance cost with quality.

7. Assess Customer Service:

  • A responsive and knowledgeable customer service team can be invaluable, especially if you have queries or face issues with your order.

8. Check Reviews and Testimonials:

  • Look for online reviews or ask the supplier for testimonials. Past customer experiences can provide insights into product quality and service.

9. Lead Time and Delivery:

  • Ensure the supplier can meet your delivery timelines. Check their shipping policies and costs.

10. Technical Support:

  • Especially important if you’re unsure about the specific type of O-ring you need. Suppliers with technical expertise can guide you to the right product.

11. Return and Warranty Policies:

  • Understand the supplier’s return policy in case the products don’t meet your standards. Check if they offer warranties.

12. Visit in Person (if possible):

  • If feasible, visit the supplier’s facility. This can give you a better sense of their operations and quality control procedures.

13. Start with a Trial Order:

  • Before committing to a large order, start with a smaller one to assess the overall purchasing experience, product quality, and delivery timelines.

14. Build a Relationship:

  • Once you’ve chosen a supplier, work on building a long-term relationship. This can lead to better pricing, priority service, and a more streamlined ordering process in the future.

Remember, the right supplier will not only provide quality O-rings but also contribute to the efficiency and success of your operations.

Suzhou Baoshida Trading Co., Ltd.


Suzhou Baoshida Trading Co., Ltd. is located in Suzhou, Anhui Province, China. The company specializes in providing high-quality rubber seals, rubber products, and power tools OEM services. With a team of experienced engineers, they have expertise in rubber mold structure, rubber product formulation, rubber processing, and electric tool structure. The company collaborates with over 10 partner factories in China, ensuring the development of new products and timely delivery of orders. Their primary goal is to offer top-notch products and technical services to address customer requirements and challenges.

Key Products:

Contact Information:

  • Contact Person: Boyce
  • Contact Number: +8618955716798
  • Email: [email protected]
  • Whatsapp: +86 15951276160

If you’re considering O-ring suppliers from China, Suzhou Baoshida Trading Co., Ltd. offers a range of rubber products and has the expertise to cater to diverse industrial needs.