Reed Rubber Products’ 5000 Series Window Kerf Seals include 5001, which is a co-extruded kerf seal with a 0.23-inch foam bulb. 5002 is a co-extruded kerf seal with a semi-hollow 0.30-inch bulb for optimal compression. These products are ideal for residential and light-commercial compression-sealed window applications. Both parts feature anti-stretch rigid stems with flexible fins for easy installation. UV stabilized TPV offers excellent resistance to weathering, chemicals and compression-set.