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Premium Sealing Inserts & O-Rings: Leak-Proof Industrial Sealing

Keep your enclosures airtight with our professional-grade Sealing Inserts and O-Rings. Designed to fit all standard Metric, PG, and NPT cable glands, these accessories are the ultimate defense against moisture, dust, and environmental aging. As a reliable Factory, CHSO provides Bulk supply for high-performance sealing in any industrial setup.

  • IP68 Guaranteed Protection: Our NBR and EPDM O-rings create a rock-solid seal between the cable gland and the enclosure, ensuring your electrical systems stay dry even in high-pressure wash-down environments.
  • Engineered for Harsh Conditions: Whether it’s the scorching sun or freezing winters, our Sealing Inserts remain flexible and won’t get brittle or crack over time. They are built to withstand UV exposure and common industrial oils.
  • Perfect Fit for Custom Cables: From standard circular seals to specialized Multi-hole and Flat-hole Inserts, we help you seal any cable type without compromising on strain relief.
  • One-Stop Wholesale Sourcing: As a dedicated Supplier, we keep massive stock of all sizes (M12 to M63, etc.), allowing you to consolidate your Locknuts, Plugs, and Inserts in one shipment to save on logistics costs.
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Sealing Inserts & O-Rings Description

As a dedicated Sealing Inserts & O-Rings Manufacturer, CHSOCN provides a robust selection of Sealing Inserts and O-Rings to ensure your electrical enclosures remain completely leak-proof. Our factory supplies high-grade NBR and EPDM components that maintain an IP68 seal, effectively shielding sensitive wiring from moisture, dust, and oil ingress.

These accessories are essential for automation panels and outdoor telecommunications, where they solve the common problem of environmental aging. We offer Bulk supply across all Metric, PG, and NPT sizes, specifically catering to the needs of every Wholesale Distributor and Exporter. View our Full Sealing Supply to find the perfect fit for your next industrial project and cut down on maintenance costs.

Sealing Plugs Datasheet

drawing of chso sealing plug

Item No. O.D Lengh Std.Pkg.
Black A mm B mm B1mm C mm PCS
SPR-055A-B 11 5.5 8.7 18 100
SPR-055B-B 9.6 5.5 7.1 18 100
SPR-067-B 9.5 6.7 7.2 18 100
SPR-071-B 13.2 7 10.7 18 100
SPR-079-B 11 7.9 8.7 18 100
SPR-092-B 15.5 9.2 12.7 18 100
SPR-103-B 13.5 10.3 10.7 18 100
SPR-105-B 17 10.5 14.3 18 100
SPR-118-B 17 11.8 14.3 18 100
SPR-120-B 15.5 12 12.7 18 100
SPR-140-B 17 14 14.4 18 100
SPR-158-B 22 15.8 19.3 18 50
SPR-178-B 22 17.8 19.3 18 50
SPR-215-B 28 21.5 25 18 50
SPR-245-B 28 24.5 25 18 50
SPR-262-B 35 26.2 33 20 10
SPR-306-B 36 30.6 33 20 10
SPR-333-B 45 33.3 43.1 20 10
SPR-410-B 46 41 43.1 20 10
SPR-473-B 53 47.3 51.6 20 10
SPR-515-B 54.5 51.5 20 10

Material: Made of rubber.

Applications: For use with metric threads, G (PF) threads, and fixing heads. Features waterproof, non-slip, and leveling properties.

Get Free Quote of Bulk Sealing Inserts & O-Rings

Get factory-direct quotes and free samples. Ensure a 100% leak-proof IP68 seal for your industrial project today. Inquire Now!

FAQs

Q1: Why should I buy O-rings in bulk from my cable gland supplier?
Consistency is key. When you get your Sealing Inserts and O-Rings from the same Factory that makes your glands, you guarantee a 100% precision fit. Sourcing them separately often leads to minor leaks or stripped threads. Buying in Bulk also significantly cuts your per-unit logistics cost.
Q2: What is the difference between NBR and EPDM inserts for outdoor use?
For general industrial oil resistance, NBR is the standard. However, if your project is in a high-UV or high-ozone environment (like a rooftop solar farm), we recommend EPDM. As an experienced Supplier, we can help you choose the material that won't crack after a few seasons in the sun.
Q3: Do these inserts fit all thread standards like NPT and PG?
Yes. While the threads (Metric/PG/NPT) differ on the gland body, the internal Rubber Inserts are sized to match the cable diameter. We provide a full cross-reference chart to ensure your Wholesale order perfectly matches your existing inventory.
Q4: Can I get custom-colored sealing washers for brand identification?
While standard colors are black and grey, we can provide custom runs for Bulk orders. This is a popular option for Distributors who want to help their customers quickly identify different power or data lines during on-site installation.

Sealing Inserts & O-Rings: The Standard for Airtight Enclosures

Most installers overlook these small parts, but as a specialized Sealing Inserts and O-Rings Manufacturer, we know they are the “last mile” of electrical safety. Our NBR and EPDM Sealing Inserts are specifically designed to fill the gap between the cable and the gland body, providing a certified IP68 waterproof barrier. Whether you are dealing with Metric, PG, or NPT threads, having the correct gasket prevents moisture from “wicking” into your automation panels or telecommunication hubs. We keep a massive Supply for Sale to help every Distributor avoid project delays caused by missing accessories.

Custom Multi-Hole and Flat-Hole Sealing Options

Not every cable is a standard circle. To solve the challenge of sealing multiple wires or flat ribbon cables, our Factory offers specialized Multi-hole Sealing Inserts. These are the go-to choice for Wholesale buyers who need to manage high-density wiring in solar inverters or server racks without drilling extra holes in the cabinet. By choosing the right Rubber Insert from our Company, you ensure a vibration-proof fit that meets strict international compliance. This flexibility makes us a preferred Exporter for complex global infrastructure projects.

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