About Company

As custom sponge and foam gaskets and seals manufacturers, A.J. Rubber & Sponge Ltd. is committed to delivering superior non-metallic products and services to our esteemed clients. From conception to final production, we ensure that all of our customer’s needs are met, and that they are completely satisfied with the end result. Manufacturing facilities, production managers and commercial and industrial business owners depend on A.J. Rubber & Sponge Ltd. for:

Foam gaskets

  • Silicone foam gaskets
  • Cross-linked polyethylene foam gaskets
  • Polyurethane foam gaskets
  • Acoustic foam gaskets
  • Microcellular urethane foam gaskets
  • And many more foam gaskets


  • Die cutting
  • Roll slitting
  • Lamination services
  • Custom gaskets & seals
  • Slitting & sheeting
  • Horizontal splitting
  • Weather stripping

Sponge gaskets

  • Vinyl nitrile sponge gaskets
  • ECH sponge gaskets
  • SBR sponge gaskets
  • EPDM sponge gaskets
  • Neoprene sponge gaskets
  • And many more sponge gaskets

Operating our custom sponge and foam gaskets and seals production facility in the heart of Hamilton, Ontario with integrity, we carry out all manufacturing jobs to our client’s exact specifications so as to successfully put our products to use for their unique application. Our state-of-the-art custom sponge and foam gaskets and seals fabricating capabilities guarantee the topmost grade consistency and quickest turn-around times and for even the most complicated finished products in the cellular rubber goods industry. A.J. Rubber & Sponge Ltd. specializes in the manufacturing of non-metallic custom sponge and foam gaskets and seals for a variety of functions within the following commercial and industrial sectors:

  • Boiler & furnace manufacturers
  • Paper & pulp processing plants
  • Steel mills & foundries
  • Power generation & utilities
  • Tank car manufacturers
  • Medical equipment production
  • Automotive component manufacturing
  • Engine fabrication & assembly (diesel, turbine & gas)
  • Military / department of defense
  • Ship building
  • Electronic & high-tech industries
  • Transportation
  • Compressor & pumps manufacturing
  • Heavy equipment, machinery & transformers
  • HVAC
  • Plumbing
  • Aviation & aerospace
  • Oil & gas drilling, production & refining
  • Mining
  • Petro-chemical & chemical
  • Small tool & appliance production
  • Contracting & construction
  • And many others

  • A.J. Rubber & Sponge Ltd.’s main objective is to offer our clients superior quality custom sponge and foam gaskets and seals, on-time and within budget. Our healthy work ethics have promoted a strong sense of pride and purpose within our staff and our expanding company. Owned and operated by John and Andrea Mathew, A.J. Rubber & Sponge Ltd. is a family business that recognizes the importance of building and maintaining solid relationships with each and every client. Andrea and John believe in giving back, and involve themselves in numerous projects to assist their community and provide opportunities to others. A musician, children’s book author, certified reiki master, Thai yoga massage practitioner and international Ayurveda and yoga teacher, Andrea is also the founder of Riya Yoga.

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