Type 21 Mechanical Seals Home / Shop / Type 21 Mechanical Seals Available metric or imperial sizes Showing all 3 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sale! BT – AR Cylcam Pump Seals Other Names BO1, T55, 118, T750, 37B/L5, 18, FA, 301 $10.00 – $180.00 Select options Sale! Type 21 Mechanical Seals (Imperial Size) $15.00 – $60.00 Select options Sale! Type 21 Mechanical Seals (Metric Sizes) $22.00 – $255.35 Select options