S-721H-4 Pro Tape Head Cleaner Fluid 4oz S-721H4

this is the exact product that I last purchased over 20 years ago. company, product no., even the label, given some stylistic changes. Warnings and ingredient (hexane) still the same. Don't mess with success. You don't use tape head cleaner much, and even when you do it's still not much.

Does a great job cleaning my reel to reel heads and rollers. Leaves no residue, strong job cleaning the oxide off the heads and rollers, and pinch roller.

I have been using this cleaner for years now. I use it to keep the capstan rollers, tape heads and tension arms free from dust and oxide that builds up after tape use. I continue to buy it because I feel it's the best product to use on my Teacs and Otari Reel to Reel systems. The S-721H-4 professionally cleans and conditions the rubber parts and ensures a smooth tape path flow for best quality sound from your epuipmet at all times. I am very satisfied with the product and highly recommend using it if you have vintage equipment or electrical products you want to have years from now. DEW

Only product to trust on my Nakamichi tape decks

I have several very popular cleaning fluids I use to work on my ever growing collection of cassette decks. I must say unlike another leading cleaner this doesn't emit a strong lingering odor. Very nice. This cuts residue right off pinch rollers after scrubbing them using a cotton swab. I have nearly 100 top tape decks and I would proudly use this on any of them. My highest recommendation A+++

Just not like the old Freon TF from the late 80's but still a good cleaner.

Bought this to clean an old reel to reel, works really well. Packaging was good well shipped. Product comes in a nice glass bottle

Use of this product is recommended in conjunction with "Rubber Renue from MG Chemicals" in restoring capstan pinch rollers.Rubber Renue from MG Chemicals while effective in renewing a wide range of magnetic tape and classic audio equipment rubber parts, leaves wintergreen oil on the rubber. This is apparently not a problem for most rubber parts but in the case of capstan pinch rollers, this is not desirable as noted below, and some subject matter experts/technicians recommend removing the residual wintergreen oil after a Rubber Renue treatment, with the American Recorder Technologies S-721H-4 product.=====================This Amazon review was posted by By Angela on February 7, 2016 and apparently written by Jeff Blasinski has some helpful information."Do not use MG Chemicals Rubber Renue to clean rubber capstan pinch rollers that come into direct contact with audio/video tape!""I have a very old cassette deck. I had been searching for a product to properly clean tape oxide on the rubber capstan pinch roller. I researched this extensively. There was a product made by TEAC but has since been discontinued that was specifically formulated to clean rubber pinch rollers in cassette decks. Numerous posts on the Internet stated that Rubber Renue from MG Chemicals was the best product to use since the TEAC product has been discontinued. Other posts stated that using alcohol - even highly pure 99.9% isopropyl alcohol, will dry and ultimately crack the rubber. I confirmed this with the Tascam service/support team, but they said that since they no longer make the proper rubber cleaner, they have no choice but to use isopropyl alcohol and that it will ultimately render the rubber roller dried and cracked. So, given the large numbers of comments stating that Rubber Renue from MG Chemicals was the correct product to use, I called their sales department at MG Chemicals. They confirmed that this product can be used to clean rubber capstan pinch roller cleaners - that it was in fact ideal for this use. When I first opened the bottle and applied it, I was struck by how it smelled of wintergreen. I was also concerned by the warnings on the bottle - the product is very toxic. I cleaned the rubber pinch roller and a lot of black oxidized rubber came off of the roller. After that first application, no other black oxidized rubber came off. So I tried a second and third application because all of the oxidized tape residue hadn't been removed, but no more black material came off of the roller. I became concerned that this was likely an incorrect product to use on a rubber capstan pinch roller that comes into contact with audio tape. Upon much additional research:- In fact, no product with any oils should be used to clean rubber capstan pinch rollers that comes into direct contact with audio tape. This MG Chemicals Rubber Renue product contains wintergreen oil that is absorbed by the rubber as a way to prevent the rubber from being dried out. I confirmed with several experts that this is the worst thing a person can do to a capstan pinch roller.- MG Chemicals technical support confirmed that they were not able to recommend this product be used on rubber that contacts audio or video tape. They said that it simply has not been designed or tested for such use.- MG Chemicals was very helpful to let me know that the formulation of this product did not harm the rubber and is designed to remove oxidized rubber without leaving oxidized rubber residue, and that it does leave behind wintergreen oil.- I talked with American Recorder technical support about their head and capstan pinch roller cleaner S-721H-4. They confirmed that S-721H-4 has been safe to use to clean rubber pinch rollers for over 40 years and is the correct product to remove oxidized tape from pinch rollers. They also confirmed that I should be OK to remove the wintergreen oil from the pinch roller using S-721H-4.- I saw one post from someone that services their high-end tape deck with this MG Chemicals Rubber Renue and then uses American Recorder S-721H-4 to remove the wintergreen oil.MG Chemicals responded to my questions immediately, they were very professional, and willing to go the extra mile to get the correct technical experts involved to understand my problem. They were great.Conclusions:For cleaning audio and video pinch rollers that come into direct contact with audio and video tapes, this product should not be used according to exerts, including those at MG Chemicals. If you do need to restore rubber pinch rollers that contact audio and video tape, be careful to not use a product that infuses oils into the rubber as this can damage or destroy the audio tape. American Recorder confirmed this, and said that if you need a good cleaner that will not dry the rubber roller, use their product: S-721H-4.Jeff Blasinski"