This white continuous thread plastic cap is made of polypropylene (PP) plastic. Made to fit our 33mm (33-400 neck finish) vials, bottles and jars, this closure features a textured (matte) top and ribbed sides. Ribbed design provides a comfortable grip when removing this lid. Cap includes both a SureSeal® 226 foam liner as well as a Foamseal PS-21 pressure sensitive liner. A great general purpose closure that is ideal for dressings and sauces, dairy items, personal care products, industrial and household chemicals, and more.

Key benefits:

  • Cap fits 33mm (33-400) neck finish bottles
  • Fine ribbed sides offer a comfortable grip when opening and closing
  • Includes both a SureSeal® 226 foam liner as well as a Foamseal PS-21 pressure sensitive liner
  • Ideal closure for numerous applications including beauty products, pharmaceuticals and nutraceuticals, household chemicals and more
  • Matte top finish
  • Proudly Made in the USA
SureSeal® Foam Liner
This one-piece, three-ply coextruded liner features a low density polyethylene skin top and bottom with a foamed polyolefin core. Core and outer skin fusion with closed cell LDPE foam core of sandwiched within LDPE. This results in a chemically fused, single polymeric product. Symmetrical construction - either side can serve as the liner face. Applications have provided positive sealing for foods, beverages, pharmaceuticals, cosmetics, industrial and household chemicals. SureSeal® is chemically inert, odorless, tasteless and dust-free. This liner features good resistance to acids, alkalies, slow solvents, alcohols, oils and aqueous products. Excellent sealability, resiliency and compression recovery. Excellent torque retention.

Cap Liner Type:

Foamseal PS-21 Pressure Sensitive Liner Composition
The Foamseal PS-21 Pressure Sensitive Liner is an extruded foam polystyrene liner is made with an EVA-based pressure sensitive (PS) adhesive coating on the back. This liner is designed to be used as an innerseal to seal solid products, such as dry foods and pharmaceuticals. A seal is developed at room temperature conditions by pressure only.
Release Coating--
PS Adhesive.0001".0025mm
Foamseal PS-21 Pressure Sensitive Liner, .021


Polypropylene PlasticPolypropylene (PP) is a tough plastic that has excellent chemical resistance. PP is translucent in its natural state but can have a glossy finish when produced with color. Some examples of common products made with PP are dairy and medication containers. Polypropylene is suitable for hot fill applications of up to 205°F and is therefore great for autoclaving. It is not recommended for cold or sub-freezing temperatures. The Cary Company has an assortment of polypropylene plastics available for purchase, such as plastic caps and jars, which have a higher tolerance for chemical products. Discover if Polypropylene is appropriate for hot fill application by learning more about What Is Hot Fill Packaging and how it applies to Polypropylene containers.


This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility.

Additional Information

More Information
Neck Width33 mm
Neck Finish33-400
Cap LinerSureSeal® 226 Series .035" Thick Foam & Foamseal PS-21 .021" Thick Pressure Sensitive Liners
Liner CompatibilityGlass, PE (HDPE, LDPE), PET, PP, PVC, Universal
Dimensions1.37" Dia. x 0.45" H
Case Pack5,000 ea.
Pallet Pack75,000 ea. (15 Cases)
Case Weight54 lbs.
Pallet Weight810 lbs.
Case Dimensions24" L x 16" W x 15" H
Pallet Dimensions48" L x 48" W x 65" H
IndustriesAgricultural, Automotive, Food & Beverage, Health & Beauty, Household Chemicals, Nutraceuticals
Country of ManufactureUnited States
Note:** Pressure sensitive liners are not considered a form of tamper evident seal.
Q & A
Customer Questions
Can you ship internationally? Where are you located?
The Cary Company online ordering platform is only set up to ship within the United States. For international shipments, please contact us at 630.629.6600 or Sales@thecarycompany.com, and we will be happy to process your order. Our main warehouse and office are located in Addison, Ill. We also have warehouses in across the United States that you can see here. Thank you for choosing The Cary Company.
Which styles do continuous threaded caps come in?
CT caps come in smooth top/smooth side, smooth top/ribbed side, matte top/ribbed side, and vented styles.
What’s the benefit of using this continuous threaded cap?
CT caps are widely used across industries due to its sleek look, great grip and easy use when opening and closing. Its wide surface allows for an ideal platform for labeling.
What type of containers are often paired with continuous threaded caps?
Continuous threaded caps can be used with various industries and numerous sized containers anywhere from small glass vials to industrial F-style containers. Compatible containers are listed (though not limited to) under the related items section of the product page.
Did you find what you were looking for?

You May Also Like

Product Reviews

5 out of five star rating on Trustpilot

Based on 2 customer(s) reviews

5 out of five star rating on Trustpilot

Linda Snyder, 05 August 2022

Caps received are as required.

Verified, collected by Verified Reviews

5 out of five star rating on Trustpilot

anonymous anonymous, 22 June 2021

The samples provided helped our company find a cap that was in stock at a better cost.

Verified, collected by Verified Reviews