Home ProductsPTFE Oil Seal

sampler vials screw cover caps with 8mm central hole / PTFE septa , 18mm

China Shanghai Oil Seal Co.,Ltd. certification
China Shanghai Oil Seal Co.,Ltd. certification
Good Products ,Good Service,Good Sourcing Platform!

—— Michael

Easy to talk with, very professional and fast service, the flag quality is super good. Even better than we ordered from Germany!!

—— Germany Fabian Scherb

We trust the quality of your products. It always the best. Keep this going, and we will establish a long-term trade relationship with you.

—— Mr Zero

I'm Online Chat Now

sampler vials screw cover caps with 8mm central hole / PTFE septa , 18mm

small.img.alt small.img.alt small.img.alt small.img.alt

Large Image :  sampler vials screw cover caps with 8mm central hole / PTFE septa , 18mm

Product Details:
Place of Origin: Zhejiang, China
Brand Name: KY
Certification: ISO / SGS
Model Number: TSC-18
Payment & Shipping Terms:
Minimum Order Quantity: 10000 PCS
Price: USD 0.02~0.15/PC
Packaging Details: 5000 pcs/carton
Delivery Time: 20 ~ 30 days
Payment Terms: 100% T/T or WU in advance
Supply Ability: Half a million pcs per month
Detailed Product Description
Material: Tinplate - SPTE Diameter: 18mm
Height: 11mm Liner: PTFE Septa
High Light:

screw cover caps


metal screw covers

sampler vials screw cover caps with 8mm central hole / PTFE septa , 18mm



Quick Detail:


18mm tinplate screw cap with 8mm central hole and PTFE septa


Catalog Number: TSC-18


Material: Tinplate - SPTE


Outer diameter: 18mm


Inner diameter: 17mm


Diameter of central hole: 8mm


Height: 11mm


Thickness of material: 0.2mm


Liner options: PTFE septa


Weight: 1.58g (Without liner)





The tinplate screw cap has the prominent property of not easy to deformation. Comparing with aluminum material, the advantage of tinplate-SPTE material is that it’s much harder, while the disadvantage is that it will get rusty after a period of time. This tinplate screw cap is usually attached with plastisol liner inside to ensure the sealing performance. It can be used on storage jars, essential balm oil or heath care food and medcine. It can work with glass bottles and jars, plastic bottles and jars. This tinplate screw cap can also be printed with various colors or embossed / debossed with customized logo.


Applications: This 18mm tinplate screw cap with central hole is specially used in laboratories for inspecting and testing samples.

It is usually used with PTFE septa and tubular glass bottles together.





Product Name

18mm tinplate screw cap with central hole


Tinplate - SPTE

Thickness of material


Outer diameter


Inner diameter






Liner options

PTFE septa

Artwork options

Printing / Logo embossing / Logo debossing

Diameter of applicable bottle neck




Competitive Advantage:


With experience of more than five years for developing molds and producing such tinplate screw caps, we have a series of molds for producing different specifications screw caps. Most of the molds were designed and developed by our own professional engineers. The range of specifications we have from 10mm to 89mm with various design according to customer's idea. The plastisol liner we use for this cap can meet food grade standard. We can also ask third party to inspect and issue corresponding certificates according to customer’s requirement.


Such tinplate screw caps are widely used in food storage, health care products and pharmaceuticals packaging. Our products are very popular and have been exported to North America, South America, Europe, Australia, Southeast Asia and so on.


sampler vials screw cover caps with 8mm central hole / PTFE septa , 18mm 0sampler vials screw cover caps with 8mm central hole / PTFE septa , 18mm 1




      1. What is your business type?

We are a industrial and trading company. We have two factories sites for producing glass vials and aluminum caps separately in our own city.


      2. What’s your main products?

Tube glass bottles / glass vials and aluminum caps.


3. Do you provide samples?

Yes. We provide free samples for common products in stock. Usually we send samples by DHL , FEDEX , UPS etc.. Buyers should cover the Express freight cost, or you can arrange the Express to pick up samples from our factory.


      4. What surface handlings you can process for aluminum caps?

Logo printing, anodizing, logo embossing / debossing, high temperature resistant coating.


      5. What surface handlings you can process for glass vials?

Logo printing, frosting, color painting, UV coating, label...


      6. How about the cost for molding or sampling?

We are able to develop new molds according to your design. As we have our own engineers team for molding and sampling, the cost is lower than most of others.


      7. How to pay you?

We usually accept T/T, Paypal, Western Union payment terms.

Contact Details
Shanghai Oil Seal Co.,Ltd.

Send your inquiry directly to us (0 / 3000)