Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Knipex
The Knipex safety ring pliers, designated by part number ZANGE SR J31 and GTIN 4003773033769, are internal safety ring pliers featuring a 90-degree angled shape D configuration. This official Knipex industrial component is specified for internal retaining ring operations requiring an angular approach. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Knipex references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Knipex ZANGE SR J31. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.