A spare set of O-rings for use with any of our M06, M10, or M14 threaded bulkheads, including the WetLink Penetrator, the Bar30 Depth/Pressure Sensor, the Celsius Temperature Sensor, and more! Contains 10 O-rings. SKU: BR-100988-010 HS Code: 4016.93.50.10 Country of Origin: USA Product Description A spare set of O-rings for use with any of our threaded bulkheads, including the WetLink Penetrator, the Bar30 Depth/Pressure Sensor, the Celsius Temperature Sensor, and more! Contains 10 O-rings. Contents 10 x O-rings of the selected bulkhead size