Rubber Stoppers & Products
Protecting life-saving drugs from external threats is paramount to our healthcare and pharmaceutical customers. Assem-Pak | Aluseal has the quality and standards to ensure our customers’ products have safe and reliable containers so they can quickly and confidently get their products to market.

PRODUCT OPTIONS
We provide made-to-order rubber stoppers and products based on size, type, material, and standard requirements from our customers. All of our rubber products are resistant to chemicals, weathering, ozone, heat, and flex fatigue to guarantee drug protection. Our state-of-the-art manufacturing process allows for flexible production capacity and efficient project turnaround.
TYPES
- 2-Prong LYO
3-Prong LYO
Straight Wall Stopper
Snap On Stopper
C-Wall Stopper
Igloo
Septas
Lab Stoppers
Test Tube Stoppers
Sleeve Stoppers
Microtiter Mats
Plug Stoppers
SIZES
- 13mm
20mm
30mm
Custom sizes available
MATERIALS
- Bromobutyl
Chlorobutyl
Natural Rubbers
Silicone
PTFE
Isoprene
COLORS
- Black
White
Natural
Blue
Salmon
Red
Custom colors available
CAPABILITIES
- Ready to Sterilize
USP
Siliconized
Chlorinated
Fluorinated

CUSTOM PROJECTS
We understand there are many product packaging variations from container shape to type, which is why Assem-Pak | Aluseal offers our customers custom rubber products for any unique container or application. We integrate our manufacturing expertise and knowledge with our extensive machinery and plant capabilities to provide a high degree of flexibility in our customers’ product development.