Eaton SB21B Neoprene End Cap, 1 1/2"x3/8", Black

Keep cable runs safe and professional with the Eaton Tripp Lite SB21B Neoprene End Cap, engineered to protect exposed runway stringer ends in data centers, security rooms and telecom closets. The black neoprene cap cushions sharp edges, reducing cable abrasion and operator injury while offering UL94 flame resistance for compliant installations. Sized for 1 1/2" x 3/8" stringers and sold in packs of 10, the SB21B installs quickly with a simple push-on fit and is compatible with SB15, SB17 and SB18 B-Line runways—ideal for surveillance, monitoring and networking deployments.

Built for long-term resilience in high-traffic racks and enclosures, the neoprene material resists wear and preserves a tidy appearance that supports professional cable management and pathway compliance. Use these end caps to protect fiber and copper cabling, improve safety during maintenance, and support TIA/EIA best practices for cable pathways. For easy retrofits or new installations, the SB21B delivers an affordable, high-impact improvement to your cable runway system.

Order Eaton Tripp Lite SB21B end caps to secure stringer edges in your security, surveillance, monitoring or IT infrastructure projects.

• Protects personnel and cabling by covering sharp runway stringer ends for safer installations
• Durable neoprene construction with UL94 flame resistance reduces abrasion and extends cable life
• Quick push-fit installation for 1 1/2" x 3/8" stringers; compatible with SB15, SB17 and SB18 runways
• Sold in packs of 10 for efficient deployment across racks and enclosures
• Low-profile black finish maintains a professional appearance for security, surveillance and networking environments