Magnasphere 1838 Spare O-Ring for MSK-101-MM-HL

Keep your security and surveillance systems performing reliably with the Magnasphere 1838 spare O-ring. Designed as an OEM replacement for the MSK-101-MM-HL magnetic contact series, this precision O-ring restores the seal that prevents moisture, dust, and mechanical wear from compromising magnetic contact sensors. The TAA-compliant 1838 model is built from defeat-resistant materials, helping to extend sensor life and reduce nuisance alarms—critical for monitoring, access control, and perimeter security applications.

Technicians and facility managers will appreciate the fast, tool-free swap that minimizes downtime and service calls. Because this O-ring is engineered specifically for Magnasphere MSK series devices and supports magnetic contact functionality, you get a dependable fit and consistent performance across door contacts and enclosure installations. Ideal for commercial security, surveillance, and asset protection systems, the Magnasphere 1838 spare O-ring is a small part that makes a big difference in system uptime and reliability. Order the spare O-ring today to maintain sensor integrity and keep your monitoring systems operating at peak performance.

• Provides a reliable seal for MSK-series magnetic contacts to reduce false alarms and sensor failures
• TAA-compliant spare O-ring (Model 1838) that meets procurement and compliance needs
• Defeat-resistant construction increases durability for high-use door and frame installations
• OEM-fit for MSK-101-MM-HL ensures fast, tool-free replacement to minimize downtime
• Extends the service life of security sensors and simplifies field maintenance for technicians