Specifically engineered for secure retention of the plunger during shipping and storage — prevents plunger displacement throughout the supply chain

Precision-designed to perfectly fit over the large end of 2.5oz, 6oz, 8oz, and 12oz Semco® cartridges — airtight seal achieved

Distinctive red coloration allows for quick visual identification in busy workshop environments — streamlining your preparation process

Robust construction ensures repeated use without compromising sealing effectiveness — providing excellent value over time

Industrial-grade materials deliver consistent performance in various environmental conditions — ideal for aerospace, electronics, and precision manufacturing

The Semco® "F" Flange Cap is specifically engineered to ensure secure retention of the plunger during both shipping and storage periods — the primary function that distinguishes the F-Cap within the Semco® seal cap family. By securing the plunger in place, the F-Cap prevents displacement, contamination, leakage, and premature material curing throughout the entire supply chain from filling to point-of-use deployment.

Precision-designed to perfectly fit over the large end of multiple Semco® cartridge sizes — 2.5oz, 6oz, 8oz, and 12oz. This multi-size compatibility makes the F-Cap a versatile, standardized sealing solution across the most commonly used Semco® cartridge configurations, reducing inventory complexity while ensuring reliable airtight sealing performance across all compatible cartridge sizes.

The standard F-Cap creates an airtight seal that preserves material quality and extends shelf life — protecting valuable dispensing materials from contamination, moisture ingress, and air exposure that causes premature curing. This airtight sealing performance ensures that every cartridge stored with the F-Cap arrives at the maintenance facility with its contents fully protected and ready for professional application.

The distinctive red coloration allows for quick visual identification in busy workshop environments — streamlining your preparation process. This instant visual identification is particularly valuable in aerospace, electronics, and precision manufacturing environments where rapid verification of properly sealed cartridges is critical for workflow efficiency and material integrity management across high-volume operations.

The robust construction ensures repeated use without compromising sealing effectiveness — providing excellent value over time. This durability is a critical advantage in professional maintenance environments where cost efficiency and consistent performance across multiple use cycles are essential. Industrial-grade materials deliver consistent sealing performance throughout the full service life of each F-Cap.

Manufactured from industrial-grade materials delivering consistent performance in various environmental conditions — making the F-Cap ideal for aerospace, electronics, and other precision manufacturing applications where material integrity is paramount. Trust the industry-standard Semco® Red Flange Cap for reliable protection of your valuable materials throughout your supply chain and storage processes.

F-Cap precision-fitted over the large end of the 2.5oz, 6oz, 8oz, or 12oz Semco® cartridge — perfect fit engages secure plunger retention

Plunger securely retained — airtight seal created, red visual confirmation engaged, contamination and premature curing prevented

Industrial-grade construction maintains integrity throughout shipping and storage — material quality preserved, shelf life extended across the supply chain

F-Cap removed at point of use — robust construction enables reuse, cartridge ready for immediate professional deployment with dispensing gun

Specifically engineered for secure plunger retention — prevents displacement during shipping and storage

Precision fit over large end of 2.5oz, 6oz, 8oz, and 12oz cartridges — airtight seal achieved

Robust construction ensures repeated use without compromising sealing effectiveness — excellent long-term value

Consistent performance in various environmental conditions — trusted across aerospace, electronics, and precision manufacturing