Products
Rubber-to-metal bonded parts
Rubber bonded metal parts put rubber onto a metal insert so one component seals, mounts or damps instead of three. Conquest Seal supplies rubber-to-metal bonded products, from bonded seals to bushings, mounts and anti-vibration parts, on steel, stainless, aluminum or brass inserts, made to your print by the molders we source from. The rubber can be nitrile, EPDM, FKM, silicone or natural rubber, and the bond and hardness are checked against your specification before it ships. Send the drawing and the quantity and a Conquest representative quotes it.
- Products
- bonded bushings, mounts and seals with metal inserts
- Inserts
- steel, stainless steel, aluminum, brass
- Elastomers
- NBR, EPDM, FKM, silicone, natural rubber
- Testing
- bond and hardness checked to your specification
- Made
- to your print by the molders we source from
- To quote
- send the drawing and the quantity
A bonded part is only as good as its bond, so the parts we supply come from molders who prepare the insert, apply the bonding agent and mold the elastomer under one quality system. Steel, stainless steel, aluminum and brass inserts are the usual choices, with NBR, EPDM, FKM, silicone or natural rubber bonded to them. Every part is checked against your drawing before it ships. Orders are handled under Conquest Seal's AS9100D quality management system, whose certificate scope includes distribution. Tell us the insert, the elastomer and the quantity and we quote it.
Whether you need a replacement bonded seal, an anti-vibration mount or a bushing for a new assembly, send the drawing and the quantity and we quote it.
Industries that buy rubber-to-metal bonded parts
Frequently asked
How is rubber bonded to metal?
The molder makes the bond as part of molding the part. The metal insert is prepared, coated with a bonding agent and placed in the mold, and the rubber is molded onto it. The parts are then checked against the drawing and any bond test it names.
Which test is used for rubber-to-metal bond strength?
ASTM D429 is the standard for testing how well rubber holds to a rigid part, which is usually metal (ASTM D429-14(2023), ASTM store listing, read 2026-09-28). Its Method A tests rubber bonded between two parallel metal plates, and its Method B strips rubber from a single metal plate at 90 degrees. The drawing names the method and the result the part must meet.
How is the bond specified and checked?
The print names the adhesion requirement and the test method that proves it, such as one of the ASTM D429 methods. The molders we source from test to that requirement, and the results are reported with the parts when the order asks for them. If the drawing has no bond requirement, the quote asks for one before the tool is cut.
Which elastomers bond well to metal?
Natural rubber, nitrile, EPDM and neoprene bond readily with standard primer and adhesive systems, and they cover most mounts and bushings. Silicone and fluorocarbon bond too but need their own primer systems and careful insert preparation, so they are specified when the service needs them: fluorocarbon for oil and heat, and silicone for wide temperature swings. The elastomer follows the service; the bond system follows the elastomer.
Should the insert be plated or passivated before or after bonding?
Before, in almost every case, with the bond area masked or left bare where the adhesive needs a clean, roughened surface. Plating baths and passivation chemistry after molding can attack the adhesive line, so a post-bond finish is specified only when the whole part can tolerate it. Put the finish, the bond zones and the free zones on the drawing so the molder prepares the insert the same way every lot.
What tolerances apply to a bonded part?
Two sets. The metal insert holds machining or stamping tolerances from your drawing, and the rubber holds the molded-rubber tolerance class the drawing names. Dimensions that reference the insert, such as rubber height over a metal face, carry both stacks, so state which datum controls.
Can you supply a bonded part from a sample instead of a drawing?
A bonded part is quoted from a drawing. If you have only a sample, ask the equipment maker for the print; the sample helps us confirm it.
Related guides
Send the drawing and the quantity
The print with the insert material and the elastomer, and the quantity. Bonded parts are made to your print by the molders we source from; a Conquest representative replies.
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