Product Collection

Rubber O-Rings

Julong Rubber manufactures custom rubber O-rings for static sealing, dynamic sealing, fluid control, air sealing, oil resistance, pressure sealing, and general industrial assembly applications. We support OEM and ODM production based on drawings, samples,...

Get a Quote View Products

Rubber O-Rings

13 products found

Black Rubber O-Rings

Previous 1 2

Category Overview

Custom Rubber O-Rings Manufacturing

Rubber O-rings can be used in pumps, valves, hydraulic systems, pneumatic systems, automotive components, HVAC equipment, electrical enclosures, machinery, appliances, and industrial devices. Material options include NBR, EPDM, silicone, FKM, HNBR, CR, natural rubber, SBR, and custom rubber compounds depending on temperature, oil, water, chemicals, compression set, aging resistance, and sealing performance requirements.

Buyers can specify inner diameter, cross-section, hardness, material grade, color, tolerance, working temperature, pressure condition, compliance requirements, quantity, and packaging. Julong Rubber provides material advice, mold development, sampling, inspection, and export-ready production for custom rubber O-ring projects.

Manufacturing Process

From Raw Material to Finished Rubber Parts

See how custom rubber components move through material preparation, production, secondary processing, inspection, batch manufacturing and shipment. Real production photos provide a more direct view of the manufacturing process behind each order.

The exact production route varies by product, material, tooling and manufacturing process.

Rubber raw material and compound preparation at Julong Rubber

Raw Material & Compound Preparation

Material preparation starts according to the specified rubber type, hardness and project requirements before production begins.

Rubber Compound Sheets Prepared for Manufacturing

Material Preparation & Preforming

Rubber material is prepared for the required manufacturing route, which may include cutting, weighing, preforming or extrusion preparation.

Rubber Wheel Bonding and Molding Process

Molding, Extrusion & Vulcanization

Parts are molded, extruded or otherwise formed according to the product design, tooling and selected rubber manufacturing process.

Molded Rubber Parts Trimming and Deflashing

Trimming & Secondary Operations

After primary forming, required secondary operations can include trimming, cutting, joining, bonding or other product-specific finishing processes.

In-process dimensional and visual inspection of rubber parts

In-Process Inspection

Dimensions, appearance and specified characteristics can be checked during production according to the drawing and agreed inspection requirements.

Batch Production

Approved production conditions are carried into repeat manufacturing, with batch output prepared for inspection, handling and final release.

Finished rubber parts inspected packed and prepared for shipment

Final Inspection, Packing & Shipment

Finished parts are prepared for final inspection, packing, identification and shipment according to the confirmed order requirements.

Traceable Production Stages Real production photographs provide visibility into how custom rubber components move through the factory.

Repeat Batch Manufacturing Production moves beyond sample development into repeat manufacturing under confirmed project requirements.

Inspection Before Release Inspection requirements can be defined according to drawings, product characteristics and agreed project criteria.

1995 Rubber manufacturing experience since 1995.

OEM Custom production based on drawing, sample, or application.

24h RFQ response target for drawings and technical questions.

Export Packaging and delivery support for international B2B buyers.

Need custom Rubber O-Rings?

Send your drawing, sample, material requirement, quantity, and working conditions. Julong Rubber will help review material selection, tooling, production method, and quotation details.

Get Quote