MT Valves & Fittings product. Series 88 Plastic compression ring for low- and high-density polyethylene pipes. This part is a replacement for the Series 88 brass fittings. Quick and easy to install, which saves time and makes installation easier and more convenient. Available references and published specifications: • 88900063 — measures: SPARE PART - PLASTIC C-RING 63; weight (kg): 0.08; small / large box: 10 / 90 • 88900050 — measures: SPARE PART - PLASTIC C-RING 50; weight (kg): 0.04; small / large box: 10 / 160 • 88900040 — measures: SPARE PART - PLASTIC C-RING 40; weight (kg): 0.03; small / large box: 10 / 200 • 88900032 — measures: SPARE PART - PLASTIC C-RING 32; weight (kg): 0.02; small / large box: 10 / 320 • 88900025 — measures: SPARE PART - PLASTIC C-RING 25; weight (kg): 0.01; small / large box: 25 / 600 • 88900020 — measures: SPARE PART - PLASTIC C-RING 20; weight (kg): 0.01; small / large box: 25 / 1000 Price and local availability on request. Source: https://mtspain.net/en/spare-part-plastic-compression-ring/