As one of the original American drawstring closure manufacturers, Progresco continues to make the B-LOK® line entirely in America. As you may be aware, most molded cord closures are now made overseas. While they are generally a little less expensive, they also generally do not have the fit and polish of the original, domestically-made B-LOK® line, which is now finding application on higher-end products being advertised as made in the U.S.A. And instead of having to order at least 10M of the overseas closures, you can order as few as 500 of the Progresco closures from its authorized distributors (click on drop-down menu below). Here are the latest available models with OEM installation instructions:

B-LOK®-2L P/N 303-0020-2076 (White) B-LOK®-2L P/N 303-0020-1818 (Black)(packed 2500 sets per carton w/5 equal bags)Thanks to a new integral 'shim rib' on the Slide, now stays locked even when the cords are in a no-load condition. Made of Delrin (Acetal) stocked in opaque Black or White colors (custom logo inserts can be made), recommended for dual ends of a drawstring on flotation vests, small laundry or duffle bags and miscellaneous wearing apparel. LATEST APPLICATION: ON AN ADJUSTABLE LANYARD BETWEEN THE EAR LOOPS ON TODAY'S PANDEMIC MASKS TO PREVENT BEHIND THE-EAR SORENESS. To install, thread the cords thru the Cage at the end opposite to the tab. Snap the Slide into the Cage at the tab end. Slide the lock against the load and push the Slide inward to lock. Firmly tie the ends of the cord together. (To unlock, hold the Cage with one hand, pull the Slide outward with the other and slide the whole lock away from the load as desired.) Recommended Load on the Lock ≤ 25Lbs. 1/16" ≤ Cord Size ≤ 1/8", based on the recommended soft flexible braided cords.

B-LOK®-3C P/N 303-0030-6015 (White) B-LOK®-3C P/N 303-0030-6025 (Black)(packed 2500 sets per carton w/5 equal bags)

Pat. No. 8321999
Self-locks & stays that way even w/o tension
Lower center-of-gravity appearance avoids confusion with inferior knockoffs
Spring arms w/squeeze tabs & narrower shaft allow for
re-threading on new cords w/o removing Slide from Cage
Additional rib added to Cage + notches at bottom so cage will lie flat when cords are under tension

Stocked in opaque Black or White Polypro (custom logo inserts can be made) recommended for the dual ends of a drawstring on larger bags, including laundry, duffel & sleeping, tiedowns for luggage, ladders & other cargo, soccerball tethers, etc. Also, the end of the Slide can accommodate a lanyard for remote opening or discharge. To install, thread cords thru throat of Cage. Snap Slide into Cage as shown. To enhance the self-locking action and retaining the cords in the locked position even without tension in the cords, optionally thread the cords thru the side channels provided in the new ringpull.
Recommended Load on the Lock ≤ 35Lbs. 1/8" ≤ Cord Size ≤ 3/16", based on the recommended soft flexible braided cords.

THE WORLD'S BEST FIBC CORD LOCK
for higher-end Flexible Intermediate Bulk Containers
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(Packed 500 Sets per Carton w/5 equal Bags)

Pat. No. 8321999
Self-locks & stays that way even w/o tension
Lower center-of-gravity appearance avoids confusion
with inferior knockoffs
Spring arms w/ squeeze tabs & narrower shaft allow for
re-threading on new cords w/o removing Slide from Cage
Additional rib added to Cage plus beefed up notches at
bottom so cage will lie flat when cords are under tension

Essentially a larger, heavier-duty version of the -3C, but stocked in opaque UV-stabilized Manila Polypro only (custom logo inserts can be made). This is the latest version of the original B-LOK-5 drawcord closure. Now resists breaking under prolonged high-load and high-heat conditions better than all previous models. And now least likely to accidentally unlock.

Installs same as -3C model. (Remember, optionally threading the cords thru the side channels in the ringpull further aids the self-locking action and retaining the cords in the locked position even without tension in the cords.) As before, the end of the Slide can accommodate a lanyard for remote opening. Recommended for large bulk bags, rigging for sailboats, tents & trees and other heavy-duty industrial applications. Recommended Load on the Lock ≤ 75Lbs. 3/16" ≤ Cord Size ≤ 1/4", based on the recommended soft flexible braided cords.

NOTES:

1) Please be advised that Progresco Company now shares the same office facilities, including the same Tel lines, with Odyssey Mfg. Progresco will continue to manufacture and sell the B-LOKs with custom logos and/or colors directly to OEMs requiring them. However, OEMs only needing the standard, off-the-shelf versions should continue to order them from the nearest authorized stocking distributors. Click on link on the right (business is done with them 'offline' only).

2) It is the responsibility of the end-using customer to determine the suitability of these locks for the specific application. Progresco's liability shall be limited to replacing parts due to faulty materials or workmanship.

3) If you are interested in switching to the ideal recommended soft, pre-cut, tipped cords at likely a lower cost than you are currently paying for cords that you are now hot-cutting or tying knots in, then we suggest you contact Bill Magill of Lea & Sachs at 877-296-7500 (toll free). In particular, we recommend style #4527 with 3/8" tips for the B-LOK-2L & 3C, style #4645 with 3/4" tips for the B-LOK-1B, and style #4531-M with 1/2" tips for the B-LOK-5CHD. These are normally provided in White Polyester, but you can specify Polypropylene, Nylon, etc in most any common color.

4) B-LOK® is a U.S. registered trademark of Progresco for cord locks. Only Progresco is authorized to market and sell cord locks bearing or associated with the B-LOK® trademark in any form and any marks confusingly similar to the B-LOK® mark, including, but not limited to, B-Lock 3, B-Loc 3, B-Lock 5, and/or B-Loc 5. Thus, any such cord locks, either alone or installed on or in conjunction with other goods, marketed or sold by anyone other than Progresco and identified as bearing the B-LOK® trademark or any marks confusingly similar to the B-LOK® mark, that are sold or imported into the U.S. are subject to confiscation at U.S. Customs. 2) Since Progresco has discontinued manufacturing and selling the original B-LOK® 3A and B-LOK® 5 cord locks several years ago, new cord locks being made and sold under these appellations are counterfeits and thus also subject to confiscation at U.S. Customs.