Oil level indication is a vital part of any system and requires a quick and simple checking procedure. Ideally a quick visual sight check during other regular maintenance The HFTX.PR comes in hexagonal format from 9mm to 25mm dia. with an NBR synthetic rubber sealing ring and it is resistant to solvents, oils with additions, greases, acids and alkali. Threaded fixings are from G? to G1. Further information on Elesa (UK) Ltd products may be found at: www.elesa.co.uk