Custom Die Cut Gaskets — Supplier & Converter
Custom die cut gaskets supplier and converter. ALS Tape cuts silicone, PORON, EPDM, and PTFE gaskets to your drawing, with or without adhesive backing.
Overview
ALS Tape is a custom die cut gaskets supplier and converter. We cut gaskets from sheet and roll stock — silicone sponge, PORON microcellular polyurethane, EPDM, neoprene, and PTFE — to the outline, bolt holes, and internal cutouts on your drawing, and ship them ready to place. We are the converter rather than a reseller or a molder, so tooling, unit price, and break quantities are quoted together, and the same part can move from a prototype run to production without changing supplier. Most requests are flat static gaskets: an enclosure perimeter seal, a display or lens frame, a compression pad under a bolted cover, a flange gasket with a fastener pattern. Because we convert pressure-sensitive materials as our core business, adhesive-backed die cut gaskets are standard work here — the sheet is laminated with PSA before cutting, and parts arrive kiss-cut on a liner so an operator can peel and place them without fixtures. That combination of gasket cutting and adhesive converting under one roof is what separates a tape converter from a general gasket shop, and it means a program needing both sealing gaskets and die-cut tape parts can be sourced from one supplier. Buyers evaluating a die cut gaskets supplier usually weigh three things: whether the converter stocks or can source the material the design calls for, how quickly tooling and first samples move, and whether the same shop can scale the part into production volumes. ALS Tape covers all three for electronics enclosures, automotive assemblies, and industrial equipment. Send a dimensioned drawing or DXF — or describe the joint you need to seal and the gap it has to close — and we will confirm material, tolerance, and tooling before the first part is cut.
Process Options
Custom die cut gaskets to drawing — send a DXF, DWG, PDF, or a physical sample and we convert it into a finished gasket with the outline, holes, and cutouts your joint needs.
Flatbed die cutting for gaskets — steel-rule and precision tooling suits the thick, soft, and rubber-like stock most gaskets are cut from, and keeps prototype and short-run tooling affordable.
Rotary die cutting for thin, high-volume parts — continuous tooling delivers production rates on thin foam, film, and adhesive-laminated gasket constructions.
Adhesive lamination and kiss-cut delivery — gasket stock laminated with acrylic or rubber-based PSA, cut on a liner for peel-and-place assembly, or supplied loose and unbacked.
Supported Materials
Silicone sponge and solid silicone — weather, ozone, and high-temperature service; the default where a seal must survive both heat and outdoor exposure.
PORON microcellular polyurethane — low compression set and low closure force for enclosure and display gaskets that must stay sealed over years of service.
EPDM and neoprene sheet — cost-effective outdoor and general-purpose sealing for covers, junction boxes, and IP-rated housings.
PTFE and chemically resistant stock — for gaskets exposed to aggressive fluids or where low friction and chemical inertness are required.
Adhesive-backed laminates — any of the above laminated with acrylic or rubber-based PSA and supplied kiss-cut on a liner for peel-and-place assembly.
Typical Applications
Electronics enclosures — perimeter gaskets, display and lens frames, and dust seals cut to the housing footprint.
Automotive — foam and rubber gaskets for trim, lighting, sensor housings, and interior assemblies.
Industrial equipment — flange gaskets, access panel seals, and compression pads for cabinets and junction boxes.
Medical devices — clean-room converted gaskets and cushioning parts for instrument and device assembly.
Prototyping — low-volume custom die cut gaskets to validate fit, closure force, and material choice before committing to production tooling.
Material Groups and Delivery Support
Related Products
Related Industries
FAQ
What does a custom die cut gaskets supplier do?
A custom die cut gaskets supplier converts sheet and roll stock — silicone, PU foam, EPDM, neoprene, PTFE — into finished gaskets cut to your outline, bolt holes, and internal cutouts, instead of selling sheet material you cut yourself. ALS Tape is the converter, not a reseller: we take a drawing or a sample, produce the parts on flatbed or rotary tooling, and scale the same part from prototype quantities to production runs.
Is there a minimum order for die cut gaskets?
There is no fixed minimum that applies to every program. Tooling is a one-time cost, so low volumes are practical when part value is high or the design is settled. Many programs start with prototype quantities of 100 to 500 pieces to confirm fit and closure force before moving to a production run, and tooling, unit price, and break quantities are quoted together so the volume trade-off is visible up front.
Can custom die cut gaskets be supplied with adhesive backing?
Yes, and it is standard work here. The gasket stock is laminated with a pressure-sensitive adhesive before cutting, so parts arrive on a peel-off liner and stay in position during assembly. Acrylic adhesives suit long-term and elevated-temperature service on metals and high-surface-energy plastics; rubber-based adhesives bond better to low-surface-energy plastics such as polypropylene. Note that the adhesive positions the gasket — the seal itself is still made by compression between the mating surfaces.
What tolerance can you hold on die cut gaskets?
Tolerance depends on material and thickness rather than on the shape. PORON microcellular PU foam holds approximately ±0.1 mm on precision flatbed equipment; silicone and EPDM rubber sheet in the 1–6 mm range typically holds ±0.15–0.25 mm, with die offsets compensating for spring-back; PTFE cuts to about ±0.1 mm. Softer and thicker stock sits at the looser end because it compresses under the cutting die and relaxes afterward.
How fast can you turn around tooling and samples?
Standard steel-rule flatbed tooling is typically ready in 5 to 10 business days and rotary tooling in 10 to 15 business days, depending on geometry. Prototype parts can often ship shortly after tool approval. Sending a DXF or DWG with material, thickness, and tolerance callouts lets us confirm tooling lead time accurately for your specific part.
Can you supply gaskets and die-cut tape parts on the same program?
Yes. Because ALS Tape converts both gasket stock and pressure-sensitive tape, an assembly needing a perimeter seal, a VHB bonding pad, a thermal interface part, and a Kapton insulation window can be sourced from one converter rather than split across vendors. This also keeps liner formats, packaging, and delivery schedules consistent across the parts that go into the same build.
What information do you need to quote a gasket?
A complete request includes a dimensioned drawing or DXF/DWG with the outline and cutouts, the material and thickness (or a description of the sealing requirement if the material is not yet chosen), the gap or compression range the gasket has to work across, target quantity and delivery frequency, and whether adhesive backing is needed and on which face. Partial information still works — we will identify what is missing and confirm it during quoting.
Need a Converting Partner?
Custom Die Cut Gaskets — Supplier & Converter
Share your drawing, dimensions, material preferences, or downstream assembly requirements. ALS Tape can help align fabrication methods with delivery format.
