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.
What to expect when you order
- Minimum order
- 1 roll of standard material; die-cut parts from 100 pcs
- Samples
- Stock material samples are free; custom die-cut samples take 3–9 days and are quoted per part
- Tooling
- Steel-rule dies for simple parts up to about 100 × 100 mm from about $50; multi-hole or multi-cavity dies about $80–100; rotary dies from about $300. Ready in 5–10 business days (rotary 10–15). Tooling cost can usually be credited back once production volume is reached
- Prototypes without tooling
- Laser or CNC knife cutting, so you can check fit before paying for a die
- Production lead time
- 2–14 days after the order and drawing are confirmed
- Cutting tolerance
- ±0.1 mm on PORON and PTFE; ±0.15–0.25 mm on 1–6 mm silicone and EPDM sheet
- Material proof
- Photos of the original roll labels with batch numbers; CoC or CoA on request
- Shipping
- FOB or DDP (duties included). To the US: air about 7 days, sea about 45 days. To Europe: express about 3–5 days, air about 7–10 days, sea about 30–40 days
Send the grade, thickness and a drawing or sample. A business manager replies within 24 hours.
Request a quoteProcess 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?
Die-cut parts start from 100 pcs, and standard material from 1 roll. 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.
How much does die-cut tooling cost?
A steel-rule die for a simple part up to about 100 × 100 mm starts from about $50, and a multi-hole or multi-cavity die is about $80–100. Rotary dies start from about $300 and depend on size and complexity. Tooling is a one-time cost and can usually be credited back once production volume is reached. For prototypes, parts can be laser or CNC knife cut with no tooling at all.
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.
Do you send samples before an order?
Yes. Stock material samples are free. Custom die-cut samples take 3–9 days and are quoted per part, so you can check fit before committing to a production run.
How long does production take, and how are parts shipped to the US and Europe?
Production takes 2–14 days after the order and drawing are confirmed; a first order that needs new tooling adds the tooling time (steel-rule dies 5–10 business days). We ship FOB or DDP (duties included). To the US, air freight takes about 7 days and sea freight about 45 days. To Europe, express takes about 3–5 days, air freight about 7–10 days and sea freight about 30–40 days.
How can I confirm the material is genuine?
We send photos of the original roll labels with batch numbers, and can provide a CoC or CoA on request.
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.
