Valveless Non pressure Radiator Caps

These caps are usually fitted to a cooling system where 2 caps are used

1 pressure caps rated from 4lb-20lb and 1 non pressurized Cap

These caps have no spring and are use to seal a cooling system

not vent it

2 sizes 

Standard 60 mm OD fits the 56 mm radiator necks

Large Round 70 mm od fits the 68 mm radiator necks 

Case is grade 304 Stainless Steel