Liner discs for jar caps
Non-stick PTFE liner discs for the caps you already use. Send us your cap size or a sample closure, and we’ll match the liner diameter, confirm the fit and ship by the full carton to distributors, jar brands and extraction labs across the US and Canada.
Liners only, no caps required. Samples available. Looking for complete caps? See our PTFE-lined lids.
The contact surface
A PTFE liner is a thin disc that sits inside a jar cap and forms the contact surface between the closure and the jar rim. For concentrate packaging, the PTFE face is the part that touches the product when a jar is stored upside down, shaken in transit or opened and closed many times.
PTFE (polytetrafluoroethylene) is widely chosen for this job because of a few well-known material properties:
Unlike a PTFE-lined lid, which we ship as a complete cap, a PTFE liner disc is sold on its own. That makes it the right fit for buyers who already have a cap supplier, stock their own closures, or want to upgrade an existing jar line without changing the cap tooling.
Buyers
If you stock concentrate jars and caps for your own customers, PTFE liners let you offer a PTFE upgrade option on caps you already carry. We pack by the full carton so you can hold inventory and break it down for your accounts.
Brands that sell their own jar systems can add PTFE liner discs to their assembly line, or ask us to quote lined caps as a finished part. Either way, we start with your cap drawing or a physical sample.
Labs packaging rosin, live resin and other high-terpene concentrates often want a non-stick contact surface that keeps product off the threads and the cap. If you buy jars and caps from several sources, we can quote the liners on their own or as part of a one-stop packaging order.
Selling replacement liners or lined-jar kits under your own name? See OEM & private label for packing and branding options.
Options
We quote PTFE liners based on how the liner needs to perform in your cap. Common constructions in the market include solid PTFE discs and PTFE-faced liners with a backing layer. Tell us what you use today and we’ll confirm which constructions we can supply. Contact us for details.
Liner diameter has to match the inside of the cap, not the jar’s nominal size. That’s why we ask for the cap’s neck finish (for example, 38/400 style closures), the inner diameter of the cap, or a physical sample. Contact us for details on the finishes we can match.
Thickness affects how the liner compresses against the jar rim and how it seats in the cap. Contact us for details.
Contact us for details on available colors and surface finishes for the PTFE face.
Liners ship in bulk cartons for distributors and assembly lines. Carton counts and inner packing can be adjusted on larger orders. Contact us for details.
Fit check
Neck finish, cap inner diameter, a drawing, or a few physical caps.
We check the liner size against your closure and recommend a construction and thickness.
We send liner samples so you can test them in your caps, on your jars, with your product.
Once you approve, we produce and pack to the agreed count per carton. We keep your spec on file so reorders match the approved sample.
Uses
If your jar and cap are sold as a child-resistant package, keep in mind that CR performance is evaluated for the complete package (jar, cap and liner together). Changing the liner may affect that evaluation. Check with your compliance team or testing provider before switching liners on a CR system. We don’t make CR or regulatory claims for liner discs.
Liners, 4x4 sheets and FEP film are the center of our product line, not an add-on.
We ask for your cap details first so you’re not guessing on size.
Test liners in your own caps before placing a bulk order.
Built for distributors and brands buying for inventory, not single packs.
Jars, PTFE-lined lids, 4x4 PTFE sheets, FEP sheets and parchment can ship on the same order.
Written for US and Canada buyers. More answers are in the wholesale FAQ.
Complete caps with the PTFE liner already installed.
Concentrate jars to pair with lined caps.
Pre-cut non-stick squares for concentrate packaging.
Clear non-stick film for storage and cold cure.
More answers are in the wholesale FAQ.
A PTFE liner is the disc on its own. A PTFE-lined lid is a complete cap with the liner already installed. Buy liners if you already have caps; buy lined lids if you need the whole closure.
Send us the cap’s neck finish (for example, 38/400), the inner diameter of the cap, a drawing, or a few sample caps. We’ll confirm the liner size before you order.
Contact us with your cap dimensions. We’ll confirm whether we can match a non-standard size and what the order requirements are.
We focus on wholesale and full-carton orders for distributors, brands and labs. Contact us for MOQ. Samples are available for testing.
For sticky, terpene-rich concentrates, many buyers prefer PTFE for its non-stick, chemically inert surface. Foam liners are typically chosen for cost. The right choice depends on your product and your cap, so we recommend testing samples side by side.
CR performance is evaluated for the complete jar, cap and liner system. Talk to your compliance team or testing lab before changing the liner on a CR package.
Need jars, caps or extraction supplies that aren’t listed here? Send your full packaging list and we’ll quote it as one order.
One-Stop Cannabis PackagingWholesale quote
Email your cap size, target quantity and shipping destination (US or Canada) to sales@terpvessel.com or use the quote form. Samples are available so you can test fit before ordering in bulk.