External sealThe Infi-Shield external seal from Sealing Systems prevents erosion and infiltration in manholes or catch basins. The one-piece molded seal is made from EPDM rubber and has a reinforced, preformed L-shaped corner. The product is bonded with non-hardening butyl mastic and it will pass a vacuum test. It installs in minutes without special tools. 800/478-2054; www.ssisealing systems.com.High-speed nozzleThe Model SPN nozzle from RFI Construction Products is a high-speed spinning nozzle for applying wet shotcrete mortars, grouts and epoxies to circular surfaces such as manholes. It can line 4- to 120-inch diameters. Linings can range from 1/8 to 4 inches
