All Sterilight UV systems include a quartz sleeve, which surrounds the lamp. The quartz material used in R-Can's quartz sleeves are a 100% fused silica which lend to the sleeve's high transmittance. A high transmittance is important as the UV light must travel through the sleeve to get to the water.  
There are a variety of quartz sleeve designs, depending on the system that they are being used in. The QS-200 is a domed quartz sleeve which is used in the Platinum™ and Cobalt™ series only. All replacement sleeves are shipped with two 410867 O-rings.
The QS-200 Quartz Sleeve is compatible with the SPV-3.5, SPV-200, SP200-HO, SC-200, SCM-200, SCV-200, SC200-DWS10, and the SC200-DWS11 UV systems.

Specifications:

• Origin: Fabricated in the USA
• Warranty: One year manufacturer warranty